WO2022126883A1 - 电池及装置 - Google Patents
电池及装置 Download PDFInfo
- Publication number
- WO2022126883A1 WO2022126883A1 PCT/CN2021/081760 CN2021081760W WO2022126883A1 WO 2022126883 A1 WO2022126883 A1 WO 2022126883A1 CN 2021081760 W CN2021081760 W CN 2021081760W WO 2022126883 A1 WO2022126883 A1 WO 2022126883A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery
- casing
- battery unit
- electrode
- conductive member
- Prior art date
Links
- 238000001514 detection method Methods 0.000 claims abstract description 117
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 20
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000007773 negative electrode material Substances 0.000 description 6
- 239000007774 positive electrode material Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
- H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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- 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
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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- 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
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
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- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
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- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
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- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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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
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
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- H—ELECTRICITY
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- 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
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
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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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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 the technical field of energy storage devices, and in particular, to a battery and a device.
- Embodiments of the present application provide a battery and a device, which aim to solve the problem of poor reliability caused by complicated wiring of signal detection components in the battery.
- An embodiment of the first aspect of the present application provides a battery, comprising: at least two battery cells, the battery cells have a casing and two electrode connection parts disposed on both sides of the casing and having opposite polarities, the battery cells include a series connection The first battery unit and the second battery unit; the conductive member is arranged on one side of the casing, and the conductive member is used to electrically connect one of the two electrode connecting parts of the first battery unit and the first battery unit and the second battery.
- the housing of one of the units; the signal detection component is arranged on the other side of the housing, the signal detection component has a signal detection circuit, and the signal detection circuit is used to electrically connect the other of the two electrode connection parts of the first battery unit and the casing of one of the first battery unit and the second battery unit, and the signal detection circuit and the conductive member are electrically connected to the casing of the same battery unit, so that the signal detection circuit can pass through the casing and the conductive member of the same battery unit
- a detection loop is formed with the two electrode connection
- it further includes: a first bus component, disposed on one side of the casing, the first bus component is used to electrically connect the electrode connecting parts of the first battery unit and the second battery unit to realize series connection; for electrically connecting the first bus component and the housing.
- a first bus component disposed on one side of the casing, the first bus component is used to electrically connect the electrode connecting parts of the first battery unit and the second battery unit to realize series connection; for electrically connecting the first bus component and the housing.
- first battery cell and the second battery cell be connected in series by arranging the first bus element, but also the electrical parameters of the two electrode connection parts located on one side of the first battery cell and the second battery cell are provided on the first bus element.
- the conductive component is connected to the first bus component and the housing, and the electrical parameter information of the two electrode connection parts can be transmitted to the other side of the housing through the conductive component and the housing, and the signal detection circuit can be on the other side of the housing.
- the temperature or voltage signals of the first battery unit and the second battery unit are detected, which further simplifies the circuit layout of the entire detection circuit and improves the reliability of the detection circuit.
- the conductive member is formed by extending outward from one side of the first bus member. That is, the conductive component and the first bus component are integrally formed, which can simplify the structure of the conductive component and the first bus component, and improve the stability and reliability of the connection between the conductive component and the first bus component.
- the conductive member includes a first pin and a second pin that are connected to each other, the first pin is used to electrically connect the first bus member, and the second pin is used to electrically connect to the housing. In this way, the connection between the conductive member, the first bus member and the casing does not affect each other, which can simplify the assembly of the battery.
- the first pin and the second pin are provided separately, and the battery further includes a connection part, and the connection part is used for electrically connecting the first pin and the second pin.
- the connecting member is provided with a first fuse part, and the first fuse part is used to fuse when the current reaches a threshold value to form an open circuit between the first pin and the second pin. This can improve the safety performance of the battery.
- the two electrode connection parts include a first electrode connection part and a second electrode connection part
- the battery cell further includes a third battery cell connected in series with the second battery cell, and on the same side of the case, the first electrode connection part
- the connection parts and the second electrode connection parts are alternately distributed in sequence; the first confluence part is used to connect the first electrode connection part of the first battery unit and the second electrode connection part of the second battery unit; the battery also includes a second confluence part, which is provided with On the other side of the casing, the second bus component is used to connect the first electrode connection part of the second battery unit and the second electrode connection part of the third battery unit, and the signal detection circuit is used to electrically connect the first electrode connection part of the first battery unit.
- the first electrode connection parts and the second electrode connection parts are alternately distributed in sequence, so that the first busbar on one side of the case and the second busbar on the other side of the case can connect different battery cells
- Different electrode connection parts for example, the first bus part connects the first electrode connection part of the first battery cell and the second electrode connection part of the second battery cell
- the second bus part connects the first electrode connection part of the second battery cell and the second electrode connection part of the second battery cell.
- the second electrode connecting portion of the third battery cell enables three or more battery cells to be connected in series through the first bussing member and the second bussing member.
- a detection circuit is formed between the first electrode connection part of the first battery unit and the second electrode connection part of the first battery unit through the first bus part, the conductive part, the casing of the same battery unit, the signal detection line and the second electrode connection part of the first battery unit, so that the signal The detection part can detect the temperature or voltage signal of the first battery cell.
- the second electrode connection part of the second battery cell is connected to the first bus member, the first electrode connection part of the second battery cell is connected to the second bus member, and the second electrode connection part of the second battery cell passes through the first bus member,
- a detection circuit is formed between the conductive part, the casing of the same battery unit, the signal detection circuit, the second bus part and the first electrode connection part of the second battery unit, so that the signal detection component can detect the temperature or voltage signal of the second battery unit .
- the conductive member is provided with a second fuse portion, and the second fuse portion is used to fuse when the current reaches a threshold value to form an open circuit between the electrode connection portion and the housing. This can improve the safety performance of the battery.
- the second fuse is formed by a partial cross-sectional shrinkage of the conductive member.
- the partial cross-section of the second fuse is relatively small.
- the second fuse part will fuse before other parts of the conductive member.
- the conductive part is disconnected from the position where the second fuse part is located, and the electrical connection between the electrode connection part and the casing is disconnected.
- the second fuse portion is formed by shrinking the partial cross-section of the conductive member, which can simplify the structure of the conductive member, eliminate the need to set a fuse in the conductive member, facilitate the processing, molding and installation of the conductive member, and reduce the manufacturing and installation costs of the battery.
- the electrode connection part is arranged along the first direction and protrudes from the outer surface of the casing; the casing is provided with a first connection part, the conductive member is provided with a second connection part, the first connection part and the second connection part At least one of them is extended along the first direction, and the first connection portion and the second connection portion are connected to each other so that the conductive member is connected to the housing.
- the first connecting portion and/or the second connecting portion can compensate for the height difference between the electrode connecting portion protruding from the outer surface of the casing, so that the connection between the conductive member and the casing is more stable.
- the first connecting portion is disposed protruding from the outer surface of the housing along the first direction; the second connecting portion overlaps the surface of the first connecting portion facing away from the housing, or the second connecting portion surrounds the first connecting portion.
- the peripheral side of the connection part is provided.
- An embodiment of the second aspect of the present application provides an apparatus, including the battery according to any one of the foregoing embodiments of the first aspect, and the battery is used to provide electrical energy.
- the battery includes a battery unit, a conductive part and a signal detection part.
- the battery unit has a casing and two electrode connection parts with opposite polarities, the first battery unit and the second battery unit are connected in series with each other, and the conductive member is used to connect one of the electrode connection parts of the first battery unit to the first battery unit and the second battery unit.
- the housing of one of the two battery cells is connected so that the housing carries the electrical signal of the electrode connection.
- the signal detection circuit of the signal detection component is electrically connected to the other electrode connection part of the first battery unit and the casing, and the signal detection circuit and the conductive component are connected to the same casing.
- one of the electrode connecting parts located on one side of the casing in the first battery unit can be connected to the signal detection circuit through the casing and the conductive member, and the signal detection circuit is also connected to the other side of the casing in the first battery unit. the other electrode connection part. Therefore, the signal detection circuit can form a detection loop between the conductive member and the casing and the two electrode connection parts of the first battery unit, so that the signal detection component can detect the temperature or voltage signal of the first battery unit.
- the signal detection component is arranged on the other side of the casing, and the signal detection circuit can be connected to the two electrode connection parts located on both sides of the casing in the first battery unit on the same side of the casing. Lines need not be run across both sides of the housing. Therefore, the embodiment of the present application can simplify the wiring mode of the signal detection circuit, improve the reliability of the signal detection circuit, and further improve the safety performance of the battery.
- FIG. 1 is a schematic structural diagram of a vehicle provided by an embodiment of the present application.
- FIG. 2 is a schematic structural diagram of a battery provided by an embodiment of the present application.
- FIG. 3 is an exploded schematic diagram of a battery provided by an embodiment of the present application.
- FIG. 4 is a schematic structural diagram of a second side of a battery provided by an embodiment of the present application.
- FIG. 5 is a schematic structural diagram of a battery provided by an embodiment of the present application from another viewing angle
- FIG. 6 is a schematic structural diagram of a first side of a battery provided by an embodiment of the present application.
- FIG. 7 is a schematic structural diagram of a battery provided by another embodiment of the present application.
- FIG. 8 is a schematic structural diagram of a first side of a battery according to another embodiment of the present application.
- Fig. 9 is the partial enlarged structural representation of I place in Fig. 7;
- FIG. 10 is a schematic structural diagram of a battery provided by another embodiment of the present application.
- FIG. 11 is a schematic structural diagram of a first side of a battery according to another embodiment of the present application.
- Fig. 12 is another embodiment of the partial enlarged structural schematic diagram at I in Fig. 7;
- FIG. 13 is another embodiment of the partially enlarged schematic view of the structure at I in FIG. 7 .
- the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., which are not limited in the embodiments of the present application.
- the battery cell may be in the form of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which are not limited in the embodiments of the present application.
- the battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square-shaped battery cells, and soft-pack battery cells, which are not limited in the embodiments of the present application.
- the battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.
- the batteries mentioned in this application may include battery modules or battery packs, and the like.
- Batteries typically include a case for enclosing one or more battery cells. The box can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells.
- the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator.
- the battery cell mainly relies on the movement of metal ions between the positive and negative plates to work.
- the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer, and the The current collector coated with the positive electrode active material layer serves as the positive electrode tab.
- the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganate.
- the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer, and the The current collector coated with the negative electrode active material layer serves as the negative electrode tab.
- the material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon.
- the number of positive tabs is multiple and stacked together, and the number of negative tabs is multiple and stacked together.
- the material of the separator can be PP or PE, etc.
- the electrode assembly may be a wound structure or a laminated structure, and the embodiment of the present application is not limited thereto.
- the positive electrode tab and the negative electrode tab of the battery cell are respectively electrically connected to two electrode terminals with opposite polarities on the battery cell to output electrical energy.
- a plurality of battery cells in the battery pack are usually arranged on the side, that is, the electrode terminals of the battery cells are located on both sides of the battery cell in the horizontal direction.
- the detection circuit for collecting the temperature or voltage signal of the battery cell needs to be connected to the two electrode terminals of the battery cell to form a detection loop with the two electrode terminals.
- the detection circuit needs to be arranged on both sides of the battery cell, which leads to complicated wiring of the detection circuit, reduces the reliability of the detection circuit, and causes the detection circuit The cost is higher and the safety performance of the battery is reduced.
- An embodiment of the first aspect of the present application provides an electrical device using a battery as a power source.
- the electrical device can be, but not limited to, a vehicle, a ship, or an aircraft.
- the technical solutions described in the embodiments of this application are applicable to various devices using batteries, such as mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships, and spacecraft.
- the spacecraft includes Planes, rockets, space shuttles and spaceships, etc.
- Vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle.
- New energy vehicles can be pure electric vehicles, hybrid vehicles or extended-range vehicles.
- the vehicle 1 may include a motor 1 a , a controller 1 b and a battery 10 .
- the controller 1b is used to control the battery 10 to supply power to the motor 1a.
- the motor 1a is connected to the wheels through a transmission mechanism, thereby driving the vehicle 1 to travel.
- the battery 10 can be used as a driving power source of the vehicle 1 to provide driving power for the vehicle 1 in place of or partially in place of fuel or natural gas.
- the battery 10 may be provided at the bottom or at the front or rear of the vehicle 1 .
- the battery 10 may be used to power the vehicle 1 .
- the battery 10 may be used as the operating power source of the vehicle 1 for the electrical system of the vehicle 1 .
- the battery 10 may be used for the operational electrical needs of the vehicle 1 during startup, navigation, and operation.
- FIG. 2 is a schematic structural diagram of a battery 10 provided by an embodiment of the present application.
- FIG. 3 is an exploded schematic diagram of a battery 10 provided by an embodiment of the present application.
- the battery 10 includes: at least two battery cells 100 , the battery cells 100 have a case 110 and two electrode connecting parts 120 disposed on both sides of the case 110 with opposite polarities, the battery cells 100 includes a first battery unit 100a and a second battery unit 100b connected in series; a conductive member 200 is provided on one side of the casing 110, and the conductive member 200 is used to electrically connect the two electrode connecting parts 120 of the first battery unit 100a.
- the signal detection component 300 is disposed on the other side of the casing 110, and the signal detection component 300 has a signal detection circuit 310, a signal detection circuit 310 is used to electrically connect the other of the two electrode connection parts 120 of the first battery cell 100a and the casing 110 of one of the first battery cell 100a and the second battery cell 100b, and the signal detection line 310 and the conductive member 200 It is electrically connected to the casing 110 of the same battery unit 100, so that the signal detection circuit 310 can form a detection circuit with the two electrode connecting parts 120 of the first battery unit 100a through the casing 110 and the conductive member 200 of the same battery unit 100, so as to form a detection circuit.
- the detection of the temperature or voltage signal of the first battery unit 100a is realized.
- the battery 10 includes a battery cell 100 , a conductive member 200 and a signal detection member 300 .
- the battery cell 100 has a casing 110 and two electrode connecting parts 120 with opposite polarities, the first battery cell 100a and the second battery cell 100b are connected in series with each other, and the conductive member 200 is used to connect one of the electrode connecting parts of the first battery cell 100a.
- 120 is connected to the casing 110 of one of the first battery unit 100 a and the second battery unit 100 b , so the casing 110 carries the electrical signal of the electrode connection portion 120 .
- the signal detection circuit 310 of the signal detection component 300 is electrically connected to the other electrode connecting portion 120 of the first battery unit 100 a and the casing 110 , and the signal detection circuit 310 and the conductive member 200 are connected to the same casing 110 .
- the signal detection component 300 may be a printed circuit board (full name: Printed Circuit Board; referred to as PCB) or a flexible circuit board (full name: Flexible circuit board; referred to as: FPC), and the signal detection circuit 310 may be a conductive metal arranged on the PCB or FPC.
- Foil such as copper or aluminium foil.
- One of the electrode connecting parts 120 located on the side of the casing 110 in the first battery unit 100a can be connected to the signal detection circuit 310 through the casing 110 and the conductive member 200, and the signal detection circuit 310 is also connected to the first battery unit 100a at the same time.
- the other electrode connecting part 120 is located on the other side of the casing 110 . Therefore, the signal detection circuit 310 can form a detection loop between the conductive member 200 and the casing 110 and the two electrode connecting parts 120 of the first battery unit 100a, so that the signal detection component 300 can detect the temperature or voltage signal of the first battery unit 100a .
- the signal detection component 300 is disposed on the other side of the casing 110 , and the signal detection circuit 310 on the same side of the casing 110 can be connected to two of the first battery unit 100 a located on both sides of the casing 110 .
- the electrode connecting portion 120 and the signal detection circuit 310 do not need to be provided across both sides of the casing 110 . Therefore, the embodiment of the present application can simplify the wiring mode of the signal detection circuit 310 , improve the reliability of the signal detection circuit 310 , and further improve the safety performance of the battery 10 .
- the case 110 of the battery cell 100 is connected to the electrode connection part 120 through the conductive member 200 , and the electrode connection part 120 of the battery cell 100 is directly connected to the case 110 , which can The safety problem caused by the insulation failure between the electrode connection portion 120 and the casing 110 is improved, and the safety performance of the battery 10 is improved.
- the battery cell 100 may include one battery cell 13 .
- the battery cell 100 includes two or more battery cells 13 connected in parallel with each other.
- the casing 110 of the battery cell 100 is the casing 110 of the battery cell 13
- the electrode connecting portion 120 is the electrode terminal 13 a of the battery cell 13 .
- the case 110 of the battery unit 100 may be the case 110 of any of the two or more battery cells 13 connected in parallel with each other, and the electrodes of the battery cells 100 are connected to each other.
- the part 120 may be the electrode terminal 13a of any battery cell 13, or the electrode connecting part 120 of the battery cell 100 may be an electrode terminal group formed by the electrode terminals 13a of two or more battery cells 13 having the same polarity and connected in parallel with each other.
- the embodiments of the present application take the battery unit 100 including one battery cell 13 as an example.
- the case 110 of the battery cell 100 is the case 110 of the battery cell 13
- the electrode connecting portion 120 of the battery cell 100 is the electrode terminal 13 a of the battery cell 13 .
- the battery 10 includes at least two battery cells 13, the battery cell 13 has a case 110 and electrode terminals 13a disposed on both sides of the case 110 with opposite polarities, the battery cell
- the body 13 includes a first battery cell and a second battery cell connected in series.
- the conductive member 200 is used to connect one of the electrode terminals 13a of the first battery cell and the case 110 of one of the first battery cell and the second battery cell, for example, the conductive member 200 is used to connect the first battery cell.
- the signal detection circuit 310 of the signal detection component 300 is used to connect the other electrode terminal 13a of the first battery cell and the casing 110 of the second battery cell.
- one of the electrode terminals 13a of the first battery cell forms a detection circuit between the conductive member 200, the casing 110 of the second battery cell 100b, the signal detection circuit 310 and the other electrode terminal 13a of the first battery cell,
- the signal detection part 300 can detect the temperature or voltage signal of the first battery cell through the signal detection circuit 310 .
- the conductive member 200 may also be connected to one of the electrode terminals 13a of the first battery cell and the casing 110 of the first battery cell, and the signal detection line 310 is connected to the other electrode of the first battery cell The terminal 13a and the casing 110 of the first battery cell.
- the signal detection circuit 310 forms a detection loop between the conductive member 200 and the casing 110 of the first battery cell and the two electrode terminals 13a of the first battery cell, so that the signal detection member 300 can detect the first battery cell through the signal detection circuit 310.
- the temperature or voltage signal of the battery cell is not limited to the battery cell.
- the electrical signal on the electrode terminal 13 a located on one side of the casing 110 is transmitted to the other side of the casing 110 through the conductive member 200 and the casing 110 , so that the signal detection line 310 is located on the side of the casing 110 .
- the other side can be connected to the two electrode terminals 13a of the first battery cell. Therefore, the signal detection circuit 310 does not need to be disposed across both sides of the casing 110 , which can simplify the wiring method of the signal detection circuit 310 , improve the reliability of the signal detection circuit 310 , and further improve the safety performance of the battery 10 .
- the two sides of the casing 110 are, for example, the two sides of the casing 110 in the longitudinal direction (X direction in FIG. 2 ), the two sides of the casing 110 include a first side and a second side, and the conductive member 200 is located on the first side, The signal detection part 300 is located on the second side. That is, one side of the housing 110 is the first side, and the other side of the housing 110 is the second side.
- FIG. 4 is a schematic structural diagram of a second side of a battery 10 according to an embodiment of the present application.
- FIG. 5 is a schematic structural diagram of a battery 10 provided in an embodiment of the present application from another viewing angle.
- FIG. 6 is a schematic structural diagram of a first side of a battery 10 according to an embodiment of the present application.
- the battery 10 further includes: a first bus component 400 disposed on the first side of the casing 110 , and the first bus component 400 is used to electrically connect the first battery unit 100 a and the second battery unit
- the electrode connecting part 120 of 100b is used to realize series connection;
- the conductive member 200 can be connected to the casing 110 of the first battery unit 100a or the casing 110 of the second battery unit 100b, and the casing 110 connected to the signal detection circuit 310 and the casing 110 connected to the conductive member 200 are identical.
- the signal detection circuit 310 is also connected to the casing 110 of the first battery unit 100a; when the conductive member 200 is connected to the casing 110 of the second battery unit 100b , the signal detection circuit 310 is also connected to the casing 110 of the second battery unit 100b.
- the series connection of the first battery unit 100a and the second battery unit 100b can be realized by providing the first bus unit 400 connected to the first side of the first battery unit 100a and the second battery unit 100b
- the two electrode connecting parts 120 are formed.
- the conductive member 200 is connected to the first bus member 400 and the case 110 , and can pass the electrical parameter information of the electrode connecting portion 120 on the first side of the first battery cell 100 a and the second battery cell 100 b through the conductive member 200 and the case 110 Transfer to the second side of the housing 110 .
- the signal detection circuit 310 can detect the temperature or voltage signal of the first battery unit 100a and the second battery unit 100b on the second side of the housing 110, further simplifying the circuit layout of the entire detection circuit and improving the reliability of the detection circuit.
- the number of battery cells 100 in the battery 10 may also be three or more, and the battery cell 100 further includes a third battery cell 100c connected in series with the second battery cell 100b.
- the two electrode connection parts 120 on the same battery cell 100 include a first electrode connection part 121 and a second electrode connection part 122 .
- the first electrode connection part 121 is, for example, a positive electrode connection part
- the second electrode connection part 122 is, for example, a negative electrode. connection part.
- the conductive member 200 is connected to the case 110 of one of the first battery cell 100a and the second battery cell 100b.
- the casing 110 is an aluminum casing
- the conductive member 200 is connected to the casing 110 where the positive electrode connecting portion is located. That is, the positive electrode connection part of the battery cell 100 is connected to the casing 110 thereof, so that the casing 110 itself is positively charged, which can improve the corrosion of the aluminum casing.
- the casing 110 is a steel casing
- the conductive member 200 is connected to the casing 110 where the negative electrode connecting part is located. That is, the negative electrode connecting portion of the battery cell 100 is connected to the casing 110 thereof, so that the casing 110 itself is negatively charged, which can improve the corrosion of the steel casing.
- the material of the case 110 is aluminum
- the case 110 is an aluminum shell
- the first electrode connection part 121 is a positive electrode connection part
- the second electrode connection part 122 is a negative electrode connection part as an example for illustration. Then the conductive member 200 is connected to the first bus member 400 and the case 110 of the first battery cell 100a.
- the first bus member 400 is used to connect the first electrode connection portion 121 of the first battery cell 100a and the second electrode connection portion 122 of the second battery cell 100b.
- the battery 10 further includes a second bus member 500 disposed on the second side of the casing 110, and the second bus member 500 is used to connect the first electrode connecting portion 121 of the second battery unit 100b and the second electrode of the third battery unit 100c
- the connection part 122 and the signal detection circuit 310 are used to electrically connect the second electrode connection part 122 of the first battery unit 100 a , the second bus part 500 and the casing 110 .
- the first electrode connecting parts 121 and the second electrode connecting parts 122 are alternately distributed in sequence, so that the first bus part 400 located on the first side of the casing 110 and the first bus part 400 located on the first side of the casing 110
- the second bus member 500 on the second side can be connected to different electrode connecting parts 120 of different battery cells 100 , for example, the first bus member 400 is connected to the first electrode connecting part 121 of the first battery cell 100 a and the second electrode connecting part 121 of the second battery cell 100 b
- the electrode connecting portion 122, the second bus member 500 connects the first electrode connecting portion 121 of the second battery cell 100b and the second electrode connecting portion 122 of the third battery cell 100c, so that three or more battery cells 100 can pass through the first bus
- the part 400 and the second bussing part 500 are connected in series.
- the first electrode connecting portion 121 of the first battery unit 100a is connected to the first battery unit through the first bus component 400, the conductive component 200, the casing 110 of the first battery unit 100a, the signal detection circuit 310 and the first battery unit.
- a detection loop is formed between the second electrode connection parts 122 of the 100a, so that the signal detection part 300 can detect the temperature or voltage signal of the first battery unit 100a.
- the second electrode connecting portion 122 of the second battery cell 100b is connected to the first bus member 400, the first electrode connecting portion 121 of the second battery cell 100b is connected to the second bus member 500, and the second electrode of the second battery cell 100b is connected
- the part 122 forms a detection through the first bus member 400, the conductive member 200, the casing 110 of the first battery cell 100a, the signal detection circuit 310, the second bus member 500 and the first electrode connection part 121 of the second battery cell 100b.
- a loop is formed so that the signal detection part 300 can detect the temperature or voltage signal of the second battery cell 100b.
- the first battery cell 100a when the first battery cell 100a is located at one end of the plurality of battery cells 100 arranged side by side, that is, the other battery cells 100 of the plurality of battery cells 100 except the first battery cell 100a are all located in the first battery cell
- the second electrode connecting portion 122 of the first battery unit 100a may be directly connected to the signal detection circuit 310, or the first battery unit 100a may be connected to the signal detection circuit 310 through the third bus component 600.
- the third bus component 600 Connected to each other, the third bus component 600 is used to connect the second electrode connecting portion 122 of the first battery unit 100 a and the signal detection circuit 310 .
- the third bus member 600 is used to connect the electrode connecting portion 120 of one battery cell 100 .
- the number of the second bus components 500 is plural.
- the second electrode connecting portion 122 of the first battery cell 100a and the first electrode connecting portion 121 of the other battery cells 100 located on the side of the first battery cell 100a facing away from the second battery cell 100b are connected to each other through another second bus member 500,
- the second bus part 500 and the signal detection line 310 are connected to each other.
- the third battery unit 100c When the third battery unit 100c is located at one end of a plurality of battery units 100 arranged side by side, that is, when the side of the third battery unit 100c facing away from the first battery unit 100a and the second battery unit 100b is not provided with other battery units 100, the third battery unit 100c is
- the first electrode connection part 121 of the battery cell 100c may be connected to the case 110 of one of the second battery cell 100b and the third battery cell 100c through the conductive member 200 .
- the first electrode connection part 121 is a positive electrode connection part
- the case 110 is an aluminum case
- the first electrode connection part 121 of the third battery unit 100c can be connected to the case 110 of the third battery unit 100c through the conductive member 200
- the second electrode connecting portion 122 of the three-battery unit 100c is connected to the signal detection line 310 through the second bus member 500 .
- the number of the first confluence components 400 is two or more
- the first electrode connection part 121 of the third battery unit 100c and the second electrode connection part 122 of the fourth battery unit 100d are connected to another first busbar part 400
- the first busbar part 400 is connected to the third battery through the conductive part 200
- the housing 110 of the unit 100c is attached.
- the signal detection circuit 310 is connected to each other through the casing 110 of the third battery unit 100c, the first bus component 400 and the first electrode connecting portion 121 of the third battery unit 100c, and the signal detection circuit 310 is connected to the third battery through the second bus component 500.
- the second electrode connection parts 122 of the cell 100c are connected to each other, so that a detection loop is formed between the signal detection line 310 and the first electrode connection part 121 and the second electrode connection part 122 of the third battery cell 100c.
- FIG. 2 to FIG. 6 show 12 battery cells 100 arranged in series, and each battery cell 100 includes one battery cell 13 respectively. Therefore, the battery 10 of the embodiment of the present application includes a series arrangement. 13 of the 12 battery cells.
- the battery 10 includes six first bus members 400 and six conductive members 200 , each of the first bus members 400 is connected to the first electrode connection portion 121 and the second electrode connection portion 122 of the two adjacent battery cells 100 , respectively.
- the conductive members 200 are connected to each of the first bus members 400 and the case 110, respectively.
- the battery 10 includes five second bus members 500 and two third bus members 600 .
- the third bus member 600 is only connected to the electrode connecting portions 120 of the battery cells 100 located at the ends in the arrangement direction, and the second bus member 500 and the first bus member 400 are connected to the electrode connecting portions 120 of two adjacent battery cells 100 .
- the battery unit 100 may further include two or more battery cells 13 connected in parallel with each other.
- the battery 10 when the battery 10 includes 12 battery cells 13 , one battery cell 100 may include two battery cells 13 arranged in parallel.
- the battery 10 then includes six battery cells 100 .
- the battery 10 may include three first bus parts 400 , three conductive parts 200 , two second bus parts 500 and two third bus parts 600 .
- the material of the first confluence part 400 , the second confluence part 500 and the third confluence part 600 may be aluminum or copper.
- the first confluence component 400 is, for example, a wire.
- the first bussing member 400 is plate-shaped and covers the two electrode connecting portions 120 of the first battery unit 100a and the second battery unit 100b, so as to facilitate the connection between the first bussing member 400 and the first battery unit 100a and the second battery unit 100b
- the two electrode connection parts 120 are connected to each other.
- first bus component 400 and the conductive component 200 There are various ways of connecting the first bus component 400 and the conductive component 200 . Please continue to refer to FIG. 5 and FIG. 6 .
- the first bus component 400 and the conductive component 200 are provided separately.
- the material of the conductive member 200 can be aluminum or copper, and the conductive member 200 can be fixed by welding the first bus member 400 and the casing 110 .
- the conductive part 200 includes a first pin 220 and a second pin 230 which are connected to each other.
- the first pin 220 is used for electrically connecting the first bus part 400 and the second pin 230 is used for electrically connecting the housing 110 .
- the conductive member 200 includes a first pin 220 and a second pin 230 that connect the first bus member 400 and the housing 110, respectively, such that the conductive member 200 is connected to both the first bus member 400 and the housing 110.
- the connections will not affect each other, which can simplify the assembly of the battery 10 .
- the battery 10 further includes a connection part 700 , the first pin 220 and the second pin 230 are provided separately, and the connection part 700 is used for electrically connecting the first pin 220 and the second pin 230 .
- connection part 700 connects the first pin 220 and the second pin 230 so that the housing 110 can be electrically connected with the first bus part 400 .
- the battery 10 includes three or more battery cells 100 and two or more conductive members 200, the first pins 220 and the second pins 230 of the two or more conductive members 200 can be connected to the same connecting member 700, The arrangement of circuits within the battery 10 can be simplified.
- each battery cell 100 includes one battery cell 13 , and the 12 battery cells 100 are connected to each other through the 6 conductive members 200 , the 6 The first pin 220 and the second pin 230 of the conductive part 200 may be connected to each other through the same connection part 700 .
- the connecting member 700 is provided with a first fuse part 710 , and the first fuse part 710 is used to fuse when the current reaches a threshold value to form an open circuit between the first pin 220 and the second pin 230 .
- the connecting member 700 is provided with a first fuse part 710, and the first fuse part 710 can be disconnected when the current reaches a threshold value, so as to open the circuit between the first pin 220 and the second pin 230, which can improve the Safety performance of the battery 10 .
- the first fuse part 710 can be provided in various ways.
- the first fuse part 710 is a fuse built into the connecting member 700 .
- the first pins 220 and the second pins 230 of the plurality of conductive parts 200 are connected to each other through the same connection part 700 .
- the number of the first fuse parts 710 is plural, and each of the first fuse parts 710 is respectively disposed between the first lead 220 and the second lead 230 of each conductive member 200 .
- FIG. 7 shows a schematic structural diagram of a battery 10 provided by another embodiment of the present application.
- FIG. 8 shows a schematic structural diagram of a first side of a battery 10 provided by another embodiment of the present application.
- the first bus part 400 and the conductive part 200 may be integrally formed.
- the conductive member 200 is delineated by a dashed frame, and the dashed frame does not constitute a limitation on the structure of the battery 10 in the embodiment of the present application.
- the conductive member 200 is formed by extending outward from one side of the first bus member 400 , for example, the conductive member 200 is formed by extending outward from one side of the first bus member 400 in the height direction (Z direction in FIG. 2 ). In this way, the structures of the conductive member 200 and the first bus member 400 can be simplified, and the stability and reliability of the connection between the conductive member 200 and the first bus member 400 can be improved.
- FIG. 9 is a partial enlarged schematic view of the structure at I in FIG. 7 .
- the conductive member 200 may be provided with a second fuse part 210 , and the second fuse part 210 is used to fuse when the current reaches a threshold value to form an open circuit between the electrode connection part 120 and the case 110 .
- the second fuse part 210 is blown, so that the circuit between the electrode connection part 120 and the case 110 is disconnected, which can improve the safety performance of the battery 10 .
- the second fuse portion 210 is formed by a partial cross-sectional shrinkage of the conductive member 200 .
- the partial cross-section of the second fuse portion 210 is small.
- the second fusing part 210 will fusing before other parts of the conductive member 200 .
- the conductive member 200 is disconnected from the position where the second fuse portion 210 is located, and the electrical connection between the electrode connection portion 120 and the housing 110 is disconnected.
- the second fuse portion 210 is formed by shrinking the partial cross-section of the conductive member 200 , which can simplify the structure of the conductive member 200 and eliminate the need to provide a fuse in the conductive member 200 . installation cost.
- the second fuse part 210 may also be, for example, a fuse built into the conductive member 200 .
- the conductive member 200 is, for example, a plate shape, and the second fuse portion 210 is formed by shrinking a partial cross-section of the conductive member 200 .
- the width of 210 is smaller than the width of other locations on the conductive member 200 .
- the size of the second fuse portion 210 is relatively small, and when the current on the conductive member 200 reaches a threshold value, the second fuse portion 210 fuses before other parts of the conductive member 200 to form an open circuit.
- the conductive part 200 includes the first pin 220 and the second pin 230, the first pin 220 and the second pin 230 are connected to each other through the connection part 700, and the connection part 700 is provided with the first fuse part 710, the The component 200 may also be provided with a second fuse portion 210 .
- the second fuse part 210 may be disposed on the first pin 220 and/or the second pin 230 .
- the safety performance of the battery 10 can be further improved by the first fuse part 710 and the second fuse part 210 .
- FIG. 10 shows a schematic structural diagram of a battery 10 provided by another embodiment of the present application.
- FIG. 11 shows a schematic structural diagram of a first side of a battery 10 according to another embodiment of the present application.
- the conductive member 200 is a metal wire, such as an aluminum wire or a copper wire.
- the conductive member 200 is connected between the first bus member 400 and the housing 110 .
- one end of the conductive component 200 is connected to the first bus component 400 through a bonding process, and the other end of the conductive component 200 is connected to the housing 110 through a bonding process.
- the cross-sectional area of the metal wire is small, and when the current on the conductive member 200 reaches a threshold current, the metal wire can be broken, thereby opening the circuit between the first bus member 400 and the casing 110 , improving the safety performance of the battery 10 .
- the electrode connecting portion 120 of the battery cell 100 is usually disposed protruding from the outer surface of the casing 110 .
- the conductive member 200 When the conductive member 200 is connected to the electrode connecting portion 120 , there will be a certain height difference between the conductive member 200 and the outer surface of the casing 110 . , the height difference may affect the stability of the connection between the conductive member 200 and the housing 110 .
- the electrode connecting portion 120 is disposed protruding from the outer surface of the casing 110 along the first direction (X direction in FIG. 2 ); the casing 110 is provided with the first connecting portion 111 , The conductive member 200 is provided with a second connection portion 240, at least one of the first connection portion 111 and the second connection portion 240 is extended along the first direction, and the first connection portion 111 and the second connection portion 240 are connected to each other so that the The conductive member 200 is connected to the housing 110 .
- the first connection portion 111 and/or the second connection portion 240 can compensate for the height difference between the electrode connection portion 120 protruding from the outer surface of the casing 110 , so that the connection between the conductive member 200 and the casing 110 is more stable .
- the first connecting portion 111 and the second connecting portion 240 can be arranged in various ways.
- the first connecting portion 111 is protruded from the outer surface of the casing 110 and the second connecting portion 240 overlaps the first connecting portion 111 and faces away from the casing. surface of the body 110 . This can simplify the structure of the conductive member 200 and facilitate the assembly of the conductive member 200 .
- the height of the first connecting portion 111 protruding from the outer surface of the casing 110 is equal to or similar to the height of the electrode connecting portion 120 protruding from the outer surface of the casing 110 , so that the first connection The portion 111 can compensate for the height difference of the electrode connecting portion 120 protruding from the outer surface of the casing 110 .
- FIG. 12 is another embodiment of a partial enlarged schematic view of the structure at I in FIG. 7 .
- first connecting portion 111 is arranged protruding from the outer surface of the housing 110 , and the second connecting portion 240 is arranged around the peripheral side of the first connecting portion 111 , so that the first connecting portion 111 and the first connecting portion 111 can be improved.
- FIG. 13 is another embodiment of the partial enlarged schematic view of the structure at I in FIG. 7 .
- the second connecting portion 240 is formed by bending the conductive member 200 in a direction close to the surface of the casing 110 , so that the second connecting portion 240 can compensate for the height of the electrode connecting portion 120 protruding from the outer surface of the casing 110 Difference.
- the first connecting portion 111 is protruded from the outer surface of the housing 110
- the second connecting portion 240 is formed by bending the conductive member 200 in a direction close to the first connecting portion 111 .
- 111 and the second connecting portion 240 together make up for the height difference between the electrode connecting portion 120 protruding from the outer surface of the casing 110 .
- the battery 10 further includes a side plate 11 and a fixing band 12 , the side plate 11 is located on both sides of the plurality of battery cells 100 in the thickness direction (ie, the Y direction in FIG. 2 ), and the fixing band 12 is enclosed in The side plate 11 and the periphery of the plurality of battery cells 100 .
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Abstract
Description
Claims (12)
- 一种电池,包括:至少两个串联的电池单元,每个所述电池单元具有壳体和设置于所述壳体两侧且极性相反的两个电极连接部,所述至少两个串联的电池单元包括第一电池单元和第二电池单元;导电部件,设置于壳体的一侧,所述导电部件用于电连接所述第一电池单元的所述两个电极连接部中的一者以及所述第一电池单元和所述第二电池单元中一者的壳体;信号检测部件,设置于所述壳体的另一侧,所述信号检测部件具有信号检测线路,所述信号检测线路用于电连接所述第一电池单元的所述两个电极连接部的另一者以及所述第一电池单元和所述第二电池单元中一者的所述壳体,且所述信号检测线路和所述导电部件电连接于同一所述电池单元的所述壳体,以使所述信号检测线路能够通过同一所述电池单元的所述壳体和所述导电部件与所述第一电池单元的所述两个电极连接部形成检测回路,以实现所述第一电池单元温度或电压信号的检测。
- 根据权利要求1所述的电池,其中,还包括:第一汇流部件,设置于所述壳体的一侧,所述第一汇流部件用于电连接所述第一电池单元和所述第二电池单元的所述电极连接部以实现串联;所述导电部件用于电连接所述第一汇流部件和所述壳体。
- 根据权利要求2所述的电池,其中,所述导电部件由所述第一汇流部件的一侧向外延伸形成。
- 根据权利要求2-3任一项所述的电池,其中,所述导电部件包括相互连接的第一引脚和第二引脚,所述第一引脚用于电连接所述第一汇流部件,所述第二引脚用于电连接所述壳体。
- 根据权利要求4所述的电池,其中,所述第一引脚和所述第二引脚分体设置,所述电池还包括连接部件,所述连接部件用于电连接所述第一引脚和所述第二引脚。
- 根据权利要求5所述的电池,其中,所述连接部件上设置有第一熔断部,所述第一熔断部用于在电流达到阈值时熔断以使所述第一引脚和所述第二引脚之间形成断路。
- 根据权利要求2-6任一项所述的电池,其中,所述两个电极连接部包括第一电极连接部和第二电极连接部,所述至少两个电池单元还包括与所述第二电池单元串联的第三电池单元,在所述壳体的同一侧,所述第一电极连接部和所述第二电极连接部依次交替分布;所述第一汇流部件用于连接所述第一电池单元的第一电极连接部和所述第二电池单元的所述第二电极连接部;所述电池还包括第二汇流部件,设置于所述壳体的另一侧,所述第二汇流部件用于连接所述第二电池单元的所述第一电极连接部和所述第三电池单元的所述第二电极 连接部,所述信号检测线路用于电连接所述第一电池单元的所述第二电极连接部、所述第二汇流部件和所述壳体。
- 根据权利要求1-7任一项所述的电池,其中,所述导电部件上设置有第二熔断部,所述第二熔断部用于在电流达到阈值时熔断以使所述电极连接部与所述壳体之间形成断路。
- 根据权利要求8所述的电池,其中,所述第二熔断部由所述导电部件的局部截面收缩形成。
- 根据权利要求1-9任一项所述的电池,其中,所述电极连接部沿第一方向伸出于所述壳体外表面设置;所述壳体上设置有第一连接部,所述导电部件上设置有第二连接部,所述第一连接部和所述第二连接部中的至少一者沿所述第一方向延伸设置,所述第一连接部和所述第二连接部相互连接以使所述导电部件连接于所述壳体。
- 根据权利要求10所述的电池,其中,所述第一连接部沿所述第一方向凸出于所述壳体的外表面设置;所述第二连接部搭接于所述第一连接部背离所述壳体的表面,或者所述第二连接部环绕于所述第一连接部的周侧设置。
- 一种装置,包括权利要求1-11任一项所述的电池,所述电池用于提供电能。
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EP21904823.8A EP4068492A4 (en) | 2020-12-18 | 2021-03-19 | BATTERY AND DEVICE |
JP2022538376A JP7512393B2 (ja) | 2020-12-18 | 2021-03-19 | 電池及び装置 |
KR1020227022174A KR102475576B1 (ko) | 2020-12-18 | 2021-03-19 | 전지 및 장치 |
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JP7512393B2 (ja) | 2024-07-08 |
US20220336874A1 (en) | 2022-10-20 |
CN112242594A (zh) | 2021-01-19 |
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EP4068492A4 (en) | 2023-08-02 |
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