WO2025007598A1 - 导电块及检测机构 - Google Patents

导电块及检测机构 Download PDF

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Publication number
WO2025007598A1
WO2025007598A1 PCT/CN2024/084025 CN2024084025W WO2025007598A1 WO 2025007598 A1 WO2025007598 A1 WO 2025007598A1 CN 2024084025 W CN2024084025 W CN 2024084025W WO 2025007598 A1 WO2025007598 A1 WO 2025007598A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductive block
tab
transition
reference plane
electrode assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/084025
Other languages
English (en)
French (fr)
Inventor
蒋帆
何青青
艾玉泉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to EP24835085.2A priority Critical patent/EP4733774A1/en
Publication of WO2025007598A1 publication Critical patent/WO2025007598A1/zh
Priority to US19/438,877 priority patent/US20260133221A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
    • G01R1/0416—Connectors, terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285—Testing apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/06—Measuring leads; Measuring probes
    • G01R1/067—Measuring probes
    • G01R1/073—Multiple probes
    • 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
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • 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]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • G01R31/3865—Arrangements for measuring battery or accumulator variables related to manufacture, e.g. testing after manufacture
    • 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 battery production, and in particular to a conductive block and a detection mechanism.
  • the present application provides a conductive block and a detection mechanism, which can improve the reliability of a battery.
  • the present application provides a conductive block for pressing a tab of an electrode assembly for withstand voltage testing.
  • the conductive block includes a transition surface that matches an inclined surface formed after the tab is pressed.
  • the technical solution of the embodiment of the present application performs a withstand voltage test on the electrode assembly through a conductive block, and the transition surface matches the inclined surface formed after the pole ear is pressed together, thereby reducing the risk of stress concentration caused by the conductive block abutting against the pole ear when pressing the pole ear, thereby damaging the pole ear, and the risk of stress concentration caused by the conductive block abutting against the pole ear, thereby damaging the pole ear.
  • it also reduces the risk of the pole ear warping caused by the crease generated when the pole ear is pressed together, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the conductive block further includes a first surface, the first surface is used for pressing the tab, and the transition surface is disposed adjacent to the first surface.
  • the first surface and the transition surface are both planes, and the angle between the first surface and the transition surface is an obtuse angle.
  • the technical solution of the embodiment of the present application is to perform a withstand voltage test on the electrode assembly through a conductive block, and the first surface of the conductive block is pressed against the pole ear of the electrode assembly, and when the transition surface and the first surface are both planes, the angle between the transition surface and the first surface is an obtuse angle.
  • the angle between the transition surface and the first surface is an obtuse angle, which reduces the risk of stress concentration and damage to the pole ear due to the corresponding angle being too small when the conductive block abuts against the pole ear, and also reduces the risk of the pole ear warping caused by the crease generated when pressing the pole ear, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the angle between the first surface and the transition surface is ⁇ 1, which satisfies: 110° ⁇ 1 ⁇ 150°.
  • the first surface and the transition surface are both planes, and the angle ⁇ 1 between the first surface and the transition surface satisfies 110° ⁇ 1 ⁇ 150°.
  • the risk of stress concentration damaging the tab due to the first edge where the conductive block abuts the tab is too small, and the risk of the tab warping due to the crease generated when the tab is pressed together is also reduced, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the first surface is a plane
  • the transition surface is a curved surface
  • the transition surface is tangent to the first surface.
  • the transition surface is tangent to the first surface, so that when the conductive block is pressed onto the pole ear, the first surface abuts against the pole ear more smoothly, thereby reducing the risk of damage to the pole ear caused by the abutment between the first surface and the pole ear, and also reducing the risk of warping of the pole ear caused by creases generated when pressing the pole ear, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the conductive block also includes a second surface, and the first surface, the transition surface, and the second surface are arranged in sequence along the circumference of the conductive block, the first surface and the transition surface intersect at a first edge, and the transition surface is connected to the second surface and intersects at a second edge; wherein the first edge and the second edge define a first reference plane, and the transition surface is an arc surface protruding from the first reference plane.
  • the technical solution of the embodiment of the present application is to perform a withstand voltage test on the electrode assembly through a conductive block, the first surface of the conductive block is pressed with the pole ear of the electrode assembly, the first surface is connected to the transition surface through the first edge, and the second surface is connected to the transition surface through the second edge.
  • the first edge and the second edge can abut against the pole ear, reducing the risk of stress concentration and damage to the pole ear when only one edge of the conductive block abuts against the pole ear when pressing the pole ear, and also reducing the risk of the pole ear warping caused by the crease generated when pressing the pole ear, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the angle formed by the first reference plane and the first surface is an obtuse angle.
  • the transition surface when the transition surface is a curved surface, the angle between the first reference plane defined by the first edge and the second edge and the first surface is an obtuse angle.
  • the first edge and the second edge can abut against the tab, and the angle between the first reference plane and the first surface is an obtuse angle, which reduces the risk of stress concentration and thus damage to the tab when only one edge of the conductive block abuts against the tab when pressing the tab, and the risk of stress concentration and damage to the tab due to the angle corresponding to the first edge of the conductive block abutting against the tab being too small, and also reduces the risk of the tab warping due to the crease generated when pressing the tab, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the angle between the first reference plane and the first surface is ⁇ 2, satisfying: 110° ⁇ 2 ⁇ 150°.
  • the first surface is a plane
  • the transition surface is an arc surface
  • the angle ⁇ 2 between the first surface and the first reference plane satisfies 110° ⁇ 2 ⁇ 150°.
  • the transition surface is tangent to the second surface.
  • the transition surface is tangent to the second surface, so that when the conductive block is pressed onto the pole ear, the second edge abuts against the pole ear more smoothly, thereby reducing the risk of damage to the pole ear caused by the abutment between the second edge of the conductive block and the pole ear, and also reducing the risk of warping of the pole ear caused by creases generated when pressing the pole ear, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the extended surface of the first surface intersects the extended surface of the second surface.
  • the extension surface of the first surface is orthogonal to the extension surface of the second surface.
  • the first surface is a plane
  • the transition surface is a curved surface
  • the second reference plane is parallel to the first reference plane
  • the second reference plane is tangent to the transition surface
  • the distance between the first reference plane and the second reference plane is d1
  • the extended surface of the first surface and the extended surface of the second surface intersect at a first reference line
  • the first reference line is parallel to the first reference plane
  • the distance between the first reference line and the first reference plane is d2, satisfying: 0.3d2 ⁇ d1 ⁇ 0.7d2.
  • the distance between the first reference plane and the second reference plane is d1
  • the distance between the first reference line and the first reference plane is d2, which satisfies 0.3d2 ⁇ d1 ⁇ 0.7d2.
  • d1 ⁇ 0.3d2 the contact area between the transition surface and the pole ear can be increased, reducing the risk of the second edge of the conductive block abutting against the pole ear and causing damage to the pole ear, and also reducing the risk of the crease generated when the pole ear is pressed together and causing the pole ear to warp, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the risk of the portion of the transition surface protruding too much from the first reference plane and thus causing damage to the pole ear can be reduced, and the risk of the portion of the transition surface protruding too much from the first reference plane and thus causing the second edge to not abut against the pole ear, thereby causing the first edge to abut against the pole ear and causing stress concentration and damaging the pole ear can be reduced.
  • the conductive block has a third surface connected to the second surface, the third surface is parallel to the first surface, and a distance between the first surface and the third surface is d3, satisfying: 0 ⁇ d3 ⁇ 50mm.
  • the third surface is connected to the second surface and the third surface is parallel to the second surface, and the distance d3 between the first surface and the third surface satisfies 0 ⁇ d3 ⁇ 50mm.
  • the distance d3 between the first surface and the third surface satisfies 10mm ⁇ d3 ⁇ 20mm.
  • the conductive block has a certain thickness, which is convenient for pressing the tabs and improves the convenience of operation.
  • d3 ⁇ 20mm the risk of interference between the conductive block and the pressing plate due to excessive size can be better reduced, thereby improving the convenience of pressing the conductive block with the tabs.
  • the first surface is parallel to the second surface, and a distance between the first surface and the second surface is d4, which satisfies: 0 ⁇ d4 ⁇ 50mm.
  • the first surface is parallel to the second surface, and the distance d4 between the first surface and the second surface satisfies 0 ⁇ d4 ⁇ 50mm.
  • the two ends of the body of the electrode assembly can be clamped by a pressing plate, and then the tabs can be pressed by a conductive block.
  • d4 ⁇ 50mm the risk of interference between the conductive block and the pressing plate due to excessive size can be reduced, thereby improving the convenience of pressing the tabs with the conductive block.
  • the distance d4 between the first surface and the second surface satisfies 10mm ⁇ d4 ⁇ 20mm.
  • the conductive block has a certain thickness, which is convenient for pressing the tabs and improves the convenience of operation.
  • d4 ⁇ 20mm the risk of interference between the conductive block and the pressing plate due to excessive size can be better reduced, thereby improving the convenience of pressing the conductive block with the tabs.
  • the present application also provides a detection mechanism for a withstand voltage test of an electrode assembly, the detection mechanism comprising a conductive block, a first pressure plate, a second pressure plate and an elastic member according to any embodiment of the first aspect, the conductive block being used to press the pole ears of the electrode assembly, the first pressure plate and the second pressure plate being spaced apart along a first direction, the first pressure plate and the second pressure plate being used to clamp the main body of the electrode assembly; one end of the elastic member is connected to the first pressure plate, and the other end is connected to the conductive block.
  • the detection mechanism performs a withstand voltage test on the electrode assembly
  • the detection mechanism includes a first pressing plate, a second pressing plate, a conductive block and an elastic member, the first pressing block and the second pressing block jointly clamp the main body of the electrode assembly, the conductive block is connected to the first pressing block through the elastic member, and the conductive block presses the pole ear of the electrode assembly.
  • the detection mechanism performs a withstand voltage test on the electrode assembly, which reduces the risk of damaging the pole ear and the risk of the pole ear warping caused by the folds produced by the conductive block pressing the pole ear, and improves the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the conductive block is constructed in two pieces, and the two conductive blocks are used to press the positive electrode tab and the negative electrode tab of the electrode assembly respectively.
  • the technical solution of the embodiment of the present application improves detection efficiency and convenience by respectively pressing the positive electrode tab and the negative electrode tab with two conductive blocks, and pressing the positive electrode tab and the negative electrode tab with two conductive blocks at the same time.
  • the distance between the two conductive blocks is adjustable to accommodate electrode assemblies of different sizes.
  • two conductive blocks are respectively pressed together with the positive electrode tab and the negative electrode tab.
  • the distance between the positive electrode tab and the negative electrode tab is different.
  • electrode assemblies of different sizes can be adapted to press together the positive electrode tab and the negative electrode tab at different distances, thereby improving the practicality and applicability of the detection mechanism.
  • a sliding rod and a sliding block are disposed on the first pressing plate.
  • the sliding block is slidably disposed on the sliding rod.
  • One end of the elastic member is connected to the sliding block, and the other end is connected to the conductive block.
  • the technical solution of the embodiment of the present application is to set a sliding rod on the first pressure plate and connect the conductive block to the slider through an elastic member.
  • the slider can slide on the sliding rod to adjust the distance between the two conductive blocks, thereby improving the applicability and practicality of the detection mechanism.
  • the sliding rod and the slider are simple in structure, easy to obtain, and cost-saving.
  • FIG1 is a schematic diagram of the structure of a vehicle provided in some embodiments of the present application.
  • FIG2 is a schematic diagram of the structure of a battery provided in some embodiments of the present application.
  • FIG3 is a schematic diagram of the structure of a battery cell provided in some embodiments of the present application.
  • FIG4 is a schematic diagram of the structure of a conductive block provided in some embodiments of the present application.
  • FIG5 is a schematic diagram of the conductive block in FIG4 from another perspective
  • FIG6 is a schematic diagram of the structure of a conductive block provided in some other embodiments of the present application.
  • FIG7 is a schematic diagram of the conductive block in FIG6 from another perspective
  • FIG8 is a schematic diagram of a conductive block provided in some other embodiments of the present application.
  • FIG9 is a schematic diagram of a conductive block provided in some further embodiments of the present application.
  • FIG10 is a schematic diagram of the structure of a detection mechanism provided in some embodiments of the present application.
  • FIG. 11 is a schematic diagram of the detection mechanism in FIG. 10 from another viewing angle.
  • Icons 1-conductive block; 2-first surface; 3-transition surface; 4-second surface; 5-first edge; 6-second edge; 7-first reference plane; 8-second reference plane; 9-third surface; 10-detection mechanism; 11-first pressure plate; 12-second pressure plate; 13-elastic member; 14-sliding rod; 15-sliding block; 16-fourth surface; 17-fifth surface; 18-first reference line; 19-sub-surface; 100-electrode assembly; 101-main body; 102-ear; 103-positive electrode ear; 104-negative electrode ear; 105-battery cell; 106-housing; 107-electrode terminal; 108-shell; 109-end cover; 110-battery; 111-battery case; 112-first sub-case; 113-second sub-case; 1000-vehicle; 1100-controller; 1200-motor; X-first direction; Y-second direction; Z-third direction.
  • the terms “installed”, “connected”, “connected”, and “attached” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.
  • multiple refers to more than two (including two).
  • multiple groups refers to more than two groups (including two groups)
  • multiple sheets refers to more than two sheets (including two sheets).
  • the battery may be a battery module.
  • the multiple battery cells are arranged and fixed to form a battery module.
  • the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.
  • the box body can be used as a part of the chassis structure of the vehicle.
  • part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.
  • the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.
  • the battery cell may be a secondary battery.
  • a secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.
  • the battery cells may be, but are not limited to, lithium ion batteries, sodium ion batteries, sodium lithium ion batteries, lithium metal batteries, sodium metal batteries, lithium sulfur batteries, magnesium ion batteries, nickel hydrogen batteries, nickel cadmium batteries, lead storage batteries, etc.
  • the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes.
  • the prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal prismatic battery, such as a hexagonal prismatic battery, etc. There is no particular limitation in the embodiments of the present application.
  • a battery cell generally includes an electrode assembly.
  • the electrode assembly includes a positive electrode, a negative electrode, and a separator.
  • active ions such as lithium ions
  • the separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.
  • the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.
  • the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.
  • the positive electrode current collector may be a metal foil or a composite current collector.
  • the metal foil aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc.
  • the composite current collector may include a polymer material base and a metal layer.
  • the composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).
  • the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds.
  • the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used.
  • the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.
  • the negative electrode current collector may be a metal foil or a composite current collector.
  • the metal foil aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used.
  • the negative electrode current collector has two surfaces opposite to each other in its thickness direction, and the negative electrode active material is disposed on any one or both of the two opposite surfaces of the negative electrode current collector.
  • the negative electrode active material may adopt the negative electrode active material for the battery known in the art.
  • the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials and lithium titanate, etc.
  • the silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites and silicon alloys.
  • the tin-based material may be selected from at least one of elemental tin, tin oxide compounds and tin alloys.
  • the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.
  • the separator is a membrane.
  • the present application has no particular limitation on the type of the membrane, and any known porous membrane with good chemical stability and mechanical stability can be selected.
  • the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic.
  • the separator can be a single-layer film or a multi-layer composite film, without special restrictions. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without special restrictions.
  • the separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surface of the positive and negative electrodes.
  • the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.
  • the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into a wound structure.
  • the produced electrode assemblies are usually subjected to a withstand voltage test, also known as a short circuit test, before use.
  • the test method is to press the tabs together with the conductive blocks and electrically connect them to the tabs, and then electrically connect the conductive blocks with an external withstand voltage test mechanism to achieve the withstand voltage test of the electrode assembly.
  • the tabs may have more layers, and the thickness of the multi-layer tabs is relatively large.
  • the creases produced may cause the tabs to warp, resulting in the risk of poor welding such as welding leaks when the tabs of the electrode assembly are welded to the connecting pieces or the top cover when the electrode assembly is formed into a battery cell, or the stress in the crease part is too concentrated, thereby damaging the tabs, thereby affecting the reliability of the battery cell, and further affecting the reliability of the battery.
  • the embodiment of the present application provides a conductive block for pressing the tab of the electrode assembly for withstand voltage testing, and the conductive block includes a transition surface, which matches the inclined surface formed after the tab is pressed together.
  • the electrode assembly is subjected to a withstand voltage test using a conductive block, and the transition surface matches the inclined surface formed after the tab is pressed together, thereby reducing the risk of stress concentration caused by the conductive block abutting against the tab when pressing the tab, thereby damaging the tab, and the risk of stress concentration caused by the conductive block abutting against the tab, thereby damaging the tab.
  • it also reduces the risk of the tab warping caused by the creases produced when pressing the tab, thereby improving the reliability of the electrode assembly, thereby improving the reliability of the battery cell and the battery.
  • the battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft.
  • the battery disclosed in the present application can be used to form a power supply system of the electrical equipment.
  • the embodiment of the present application provides an electric device using a battery as a power source
  • the electric device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a spacecraft, etc.
  • the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc.
  • the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.
  • FIG. 1 is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of the present application.
  • the vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.
  • a battery 110 is provided inside the vehicle 1000, and the battery 110 may be provided at the bottom, head or tail of the vehicle 1000.
  • the battery 110 may be used to power the vehicle 1000, for example, the battery 110 may be used as an operating power source for the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power requirements during the startup, navigation and operation of the vehicle 1000.
  • the vehicle 1000 may further include a controller 1100 and a motor 1200 , wherein the controller 1100 is used to control the battery 110 to supply power to the motor 1200 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .
  • the battery 110 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.
  • the battery 110 may further include a battery case 111 , in which the battery cell 105 is accommodated.
  • the battery case 111 is used to provide a storage space for the battery cell 105 , and the battery case 111 may adopt a variety of structures.
  • the battery case 111 may include a first sub-case 112 and a second sub-case 113 , the first sub-case 112 and the second sub-case 113 cover each other, and the first sub-case 112 and the second sub-case 113 jointly define a storage space for accommodating the battery cell 105 .
  • the second sub-box 113 may be a hollow structure with one end open, and the first sub-box 112 may be a plate-like structure.
  • the first sub-box 112 covers the open side of the second sub-box 113, so that the first sub-box 112 and the second sub-box 113 jointly define a storage space; the first sub-box 112 and the second sub-box 113 may also be hollow structures both with one side open, and the open side of the first sub-box 112 covers the open side of the second sub-box 113.
  • the battery 110 there may be multiple battery cells 105, and the multiple battery cells 105 may be connected in series, in parallel, or in a mixed connection.
  • a mixed connection means that the multiple battery cells 105 are both connected in series and in parallel.
  • the multiple battery cells 105 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 105 is accommodated in the battery box 111; of course, the battery 110 may also be a battery module formed by connecting multiple battery cells 105 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the battery box 111.
  • the battery 110 may also include other structures, for example, the battery 110 may also include a busbar component for realizing electrical connection between the multiple battery cells 105.
  • the battery cell 105 may be a secondary battery or a primary battery; the battery cell 105 may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.
  • FIG. 3 is an exploded view of a battery cell 105 provided in some embodiments of the present application.
  • the battery cell 105 includes a housing 106, an electrode assembly 100, and an electrode terminal 107.
  • the housing 106 includes a shell 108 and an end cap 109, the shell 108 has an opening, and the end cap 109 closes the opening to isolate the internal environment of the battery cell 105 from the external environment.
  • the shell 108 is a component used to cooperate with the end cap 109 to form an internal environment of the battery cell 105, wherein the formed internal environment can be used to accommodate the electrode assembly 100, the electrolyte and other components.
  • the shell 108 and the end cap 109 can be independent components.
  • the shell 108 can be of various shapes and sizes. Specifically, the shape of the shell 108 can be determined according to the specific shape and size of the electrode assembly 100.
  • the material of the shell 108 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.
  • the end cap 109 refers to a component that covers the opening of the shell 108 to isolate the internal environment of the battery cell 105 from the external environment.
  • the shape of the end cap 109 can be adapted to the shape of the shell 108 to match the shell 108.
  • the end cap 109 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 109 is not easily deformed when squeezed and collided, so that the battery cell 105 can have a higher structural strength and reliability can also be improved.
  • Functional components such as electrode terminals 107 can be provided on the end cap 109. The electrode terminal 107 can be used to electrically connect to the electrode assembly 100 for outputting or inputting electrical energy of the battery cell 105.
  • the material of the end cap 109 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose any special restrictions on this.
  • an insulating structure may be provided inside the end cap 109, and the insulating structure may be used to isolate the electrical connection components in the housing 108 from the end cap 109 to reduce the risk of short circuit.
  • the insulating structure may be plastic, rubber, or the like.
  • the electrode assembly 100 is a component in the battery cell 105 where an electrochemical reaction occurs.
  • One or more electrode assemblies 100 may be included in the housing 108.
  • the electrode assembly 100 is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet, and the separator is used to separate the positive electrode sheet and the negative electrode sheet to avoid short circuits between the positive electrode sheet and the negative electrode sheet to a certain extent.
  • the part of the positive electrode sheet and the negative electrode sheet with active materials constitutes the main body 101 of the electrode assembly 100, the part of the positive electrode sheet without active materials constitutes the positive electrode ear 103, and the part of the negative electrode sheet without active materials constitutes the negative electrode ear 104.
  • the positive electrode ear 103 and the negative electrode ear 104 can be located together at one end of the main body 101. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the ear 102 connects the electrode terminal 107 to form a current loop.
  • Figure 4 is a schematic diagram of the structure of the conductive block 1 provided in some embodiments of the present application
  • Figure 5 is a schematic diagram of another perspective of the conductive block 1 in Figure 4
  • Figure 6 is a schematic diagram of the structure of the conductive block 1 provided in some other embodiments of the present application
  • Figure 7 is a schematic diagram of another perspective of the conductive block 1 in Figure 6
  • Figure 8 is a schematic diagram of the conductive block 1 provided in some other embodiments of the present application
  • Figure 9 is a schematic diagram of the conductive block 1 provided in some other embodiments of the present application. It should be explained that the perspectives in Figures 5, 7 to 9 are perspectives with the second direction Y as the observation direction.
  • the second direction Y can be a direction perpendicular to the fifth surface 17.
  • An embodiment of the present application provides a conductive block 1 for pressing the pole ear 102 of the electrode assembly 100 for withstand voltage testing, and the conductive block 1 includes a transition surface 3, and the transition surface 3 matches the inclined surface formed after the pole ear 102 is pressed.
  • the withstand voltage test can be performed by pressing the electrode tab 102 with the conductive block 1 and electrically connecting the conductive block 1 to the electrode tab 102 , and connecting the conductive block 1 to an external detection device to detect whether the power supply of the electrode assembly 100 is qualified.
  • the tab 102 may be a multi-layer tab 102.
  • the multi-layer tab 102 may be placed in a horizontal direction, and the thickness direction of the multi-layer tab 102 may be a vertical direction.
  • the conductive block 1 moves downward in the vertical direction, and the first surface 2 is located in the horizontal direction and contacts the upper layer of the multi-layer tab 102.
  • the multi-layer tab 102 is pressed in the vertical direction, so that the total thickness of the multi-layer tab 102 is reduced.
  • the thickness of the multi-layer tab 102 is reduced, and the portion of the tab 102 close to the body 101 is deformed, and the first edge 5 and the second edge 6 are both in contact with the tab 102.
  • the electrode assembly 100 is subjected to a withstand voltage test through the conductive block 1, and the transition surface 3 matches the inclined surface formed after the pole ear 102 is pressed together, thereby reducing the risk of stress concentration caused by the conductive block 1 abutting against the pole ear 102 when pressing the pole ear 102, thereby damaging the pole ear 102, and the risk of stress concentration caused by the conductive block 1 abutting against the pole ear 102, thereby damaging the pole ear 102.
  • the conductive block 1 further includes a first surface 2 , the first surface 2 is used for pressing the tab 102 , and the transition surface 3 is disposed adjacent to the first surface 2 .
  • the first surface 2 and the transition surface 3 are both planes, and the angle between the first surface 2 and the transition surface 3 is an obtuse angle.
  • the first surface 2 and the transition surface 3 may both be planes, and the angle between the solid surface of the first surface 2 and the solid surface of the transition surface 3 is an obtuse angle, rather than an angle between extended surfaces. That is, during the pressing process, when the first surface 2 is arranged in the horizontal direction, the transition surface 3 is arranged obliquely upward in the direction close to the main body 101 of the electrode assembly 100, so that the first edge 5 and the second edge 6 are both in contact with the tab 102.
  • the technical solution of the embodiment of the present application is to perform a withstand voltage test on the electrode assembly 100 through the conductive block 1, and the first surface 2 of the conductive block 1 is pressed against the pole ear 102 of the electrode assembly 100.
  • the angle between the transition surface 3 and the first surface 2 is an obtuse angle.
  • the angle between the transition surface 3 and the first surface 2 is an obtuse angle, which reduces the risk of stress concentration and damage to the pole ear 102 due to the corresponding angle being too small when the conductive block 1 abuts against the pole ear 102, and also reduces the risk of the pole ear 102 warping due to the crease generated when the pole ear 102 is pressed, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery 110.
  • the first surface 2 and the transition surface 3 are both planes, and the angle between the first surface 2 and the transition surface 3 is ⁇ 1, which satisfies: 110° ⁇ 1 ⁇ 150°.
  • the first surface 2 and the transition surface 3 may both be planes, and the angle between the first surface 2 and the transition surface 3 is ⁇ 1.
  • the first surface 2 and the transition surface 3 both extend along the second direction Y, and the first surface 2 is arranged along the horizontal direction.
  • the extension direction of the first surface 2 and the transition surface 3 is taken as the observation direction, wherein the viewing angle direction of FIG. 5 is the same as the observation direction.
  • the first surface 2 and the transition surface 3 are two connected straight lines, and the angle between the two straight lines is ⁇ 1.
  • ⁇ 1 satisfies 110° ⁇ 1 ⁇ 150°.
  • ⁇ 1 may be 110°, 112°, 114°, 116°, 118°, 120°, 122°, 124°, 126°, 128°, 130°, 132°, 134°, 136°, 138°, 140°, 142°, 144°, 146°, 148°, 150°, etc.
  • ⁇ 1 may be 135°.
  • the angle ⁇ 1 may be measured by attaching a protractor to a surface connected to both the first surface 2 and the transition surface 3 to measure the angle ⁇ 1 between the first surface 2 and the transition surface 3 .
  • the first surface 2 and the transition surface 3 are both planes, and the angle ⁇ 1 between the first surface 2 and the transition surface 3 satisfies 110° ⁇ 1 ⁇ 150°.
  • the risk of stress concentration damaging the tab 102 due to the angle corresponding to the first edge 5 where the conductive block 1 abuts the tab 102 is reduced, and the risk of the tab 102 warping due to the crease generated when the tab 102 is pressed is also reduced, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery.
  • the first surface 2 is a plane
  • the transition surface 3 is a curved surface
  • the transition surface 3 is tangent to the first surface 2 .
  • the first surface 2 may be a plane
  • the transition surface 3 may be a curved surface
  • the transition surface 3 may be tangent to the first surface 2.
  • the first surface 2 may be a plane
  • the transition surface 3 may be a curved surface
  • the transition surface 3 may not be tangent to the first surface 2, that is, the connection between the first surface 2 and the transition surface 3 is similar to the connection between the first surface 2 and the transition surface 3 when both the first surface 2 and the transition surface 3 are planes, and the first edge 5 has an angular change.
  • the transition surface 3 is tangent to the first surface 2, so that when the conductive block 1 is pressed against the pole lug 102, the first edge 5 and the pole lug 102 abut more smoothly, thereby reducing the risk of the pole lug 102 being damaged due to the abutment between the first edge 5 of the conductive block 1 and the pole lug 102, and also reducing the risk of the pole lug 102 warping due to the crease generated when the pole lug 102 is pressed, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery.
  • the conductive block 1 further includes a first surface 2 and a second surface 4, the first surface 2, the transition surface 3 and the second surface 4 are sequentially arranged along the circumference of the conductive block 1, the first surface 2 and the transition surface 3 intersect at a first edge 5, and the transition surface 3 and the second surface 4 intersect at a second edge 6; wherein the first edge 5 and the second edge 6 define a first reference plane 7, and the transition surface 3 is an arc surface protruding from the first reference plane 7.
  • the intersection of the two surfaces is an edge
  • the first edge 5 is the connection between the transition surface 3 and the first surface 2
  • the second edge 6 is the connection between the transition surface 3 and the second surface 4.
  • the edge is not necessarily the edge at the corner of the two surfaces.
  • the transition surface 3 is a curved surface
  • the transition surface 3 is connected to the first surface 2 and is tangent, the probability of the existence of a corner is small
  • the first edge 5 is only the connection between the transition surface 3 and the first surface 2.
  • the first surface 2 , the transition surface 3 , and the second surface 4 are circumferential surfaces of the conductive block 1 , and may extend along a second direction Y.
  • the second direction may be represented by Y.
  • the first surface 2 can be a plane
  • the transition surface 3 can be a curved surface
  • the first edge 5 is the connection between the transition surface 3 and the first surface 2
  • the second edge 6 is the connection between the transition surface 3 and the second surface 4, that is, the first edge 5 and the second edge 6 are the two ends of the transition surface 3
  • the first edge 5 and the second edge 6 define a first reference plane 7, that is, the first edge 5 and the second edge 6 are both located on the first reference plane 7, and the first reference plane 7 is an imaginary virtual plane.
  • the angle between the first reference plane 7 and the first surface 2 is an obtuse angle
  • the transition surface 3 is a curved surface protruding from the first reference plane 7, that is, during the pressing process, when the first surface 2 is arranged in the horizontal direction, the transition surface 3 is a curved surface, and the overall extension trend is obliquely upward in the direction close to the main body 101 of the electrode assembly 100, so that the first edge 5 and the second edge 6 are both in contact with the pole ear 102.
  • the first surface 2 may be a plane
  • the transition surface 3 may be an arc surface.
  • the transition surface 3 is in full or partial contact with the tab 102, so that the pressure when the conductive block 1 is pressed against the tab 102 is dispersed over a larger contact area, reducing the risk of stress concentration and damage to the tab 102 caused by only one edge of the conductive block 1 being in contact with the tab 102 when the conductive block 1 is pressed against the tab 102, and the risk of stress concentration and damage to the tab 102 caused by too small an angle corresponding to the first edge 5 of the conductive block 1 being in contact with the tab 102, and also reducing the risk of warping of the tab 102 caused by the crease generated when the tab 102 is pressed, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery.
  • the angle formed between the first reference plane 7 and the first surface 2 is an obtuse angle.
  • the technical solution of the embodiment of the present application is to perform a withstand voltage test on the electrode assembly 100 through the conductive block 1, the first surface 2 of the conductive block 1 is pressed with the electrode ear 102 of the electrode assembly 100, the first surface 2 is connected to the transition surface 3 through the first edge 5, and the second surface 4 is connected to the transition surface 3 through the second edge 6.
  • the transition surface 3 is a plane
  • the angle between the transition surface 3 and the first surface 2 is an obtuse angle
  • the first edge 5 and the second edge 6 limit The angle between the first reference plane 7 and the first surface 2 is an obtuse angle.
  • the first edge 5 and the second edge 6 can abut against the tab 102, and the angle between the first reference plane 7 and the first surface 2 is an obtuse angle, which reduces the risk of stress concentration and damage to the tab 102 caused by only one edge of the conductive block 1 abutting against the tab 102 when the conductive block 1 is pressed with the tab 102, and the risk of stress concentration and damage to the tab 102 caused by the angle corresponding to the first edge 5 abutting against the tab 102 is too small, and also reduces the risk of the tab 102 warping caused by the crease generated when the tab 102 is pressed, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery.
  • the angle between the first reference plane 7 and the first surface 2 is ⁇ 2, which satisfies: 110° ⁇ 2 ⁇ 150°.
  • the first surface 2 may be a plane
  • the transition surface 3 may be a curved surface
  • the first edge 5 and the second edge 6 of the transition surface 3 define a first reference plane 7, and the angle between the first surface 2 and the first reference plane 7 is ⁇ 1.
  • the first surface 2 and the first reference plane 7 both extend along the second direction Y
  • the first surface 2 is arranged in the horizontal direction.
  • the extension direction of the first surface 2 and the second reference plane 8 is the observation direction, wherein the viewing angle direction of FIG. 7 is the same as the observation direction.
  • the first surface 2 and the first reference plane 7 are two connected straight lines, and the angle between the two straight lines is ⁇ 2.
  • ⁇ 2 satisfies 110° ⁇ 2 ⁇ 150°.
  • ⁇ 2 may be 110°, 112°, 114°, 116°, 118°, 120°, 122°, 124°, 126°, 128°, 130°, 132°, 134°, 136°, 138°, 140°, 142°, 144°, 146°, 148°, 150°, etc.
  • ⁇ 2 may be 135°.
  • the angle ⁇ 2 can be measured by attaching a protractor to a surface that is connected to both the first surface 2 and the transition surface 3, and drawing a straight line connecting the first edge 5 and the second edge 6 on the surface to measure the angle between the first surface 2 and the straight line.
  • the measured angle is the angle ⁇ 2 between the first surface 2 and the first reference plane 7.
  • the first surface 2 is a plane
  • the transition surface 3 is an arc surface
  • the angle ⁇ 2 between the first surface 2 and the first reference plane 7 satisfies 110° ⁇ 2 ⁇ 150°.
  • the first surface 2 and the second surface 4 can both be planes.
  • the transition surface 3 includes a plurality of sub-surfaces 19, the plurality of sub-surfaces 19 define the transition surface 3, the first edge 5 and the second edge 6 define the first reference plane 7, the angle between the first surface 2 and the first reference plane 7 can be an obtuse angle, and the angle between the second surface 4 and the first reference plane 7 can be an obtuse angle.
  • the plurality of sub-surfaces 19 are all planes, the angle between the sub-surface 19 closest to the first surface 2 and the first surface 2 is an obtuse angle, the angle between the sub-surface 19 closest to the second surface 4 and the second surface 4 is an obtuse angle, and the angle between any two adjacent sub-surfaces 19 is an obtuse angle. Wherein, the connection between each two adjacent sub-surfaces 19 can abut against the tab 102.
  • the second surface 4 is a plane
  • the transition surface 3 is a curved surface
  • the transition surface 3 is tangent to the second surface 4 .
  • the second surface 4 may be a plane
  • the transition surface 3 may be a curved surface
  • the transition surface 3 may be tangent to the second surface 4.
  • the second surface 4 may be a plane
  • the transition surface 3 may be a curved surface
  • the transition surface 3 may not be tangent to the second surface 4, that is, the connection between the second surface 4 and the transition surface 3 is similar to the connection between the second surface 4 and the transition surface 3 when both the second surface 4 and the transition surface 3 are planes, and the second edge 6 has an angular change.
  • the transition surface 3 is tangent to the second surface 4, so that when the conductive block 1 is pressed against the pole lug 102, the second edge 6 and the pole lug 102 abut more smoothly, thereby reducing the risk of the pole lug 102 being damaged due to the abutment between the second edge 6 of the conductive block 1 and the pole lug 102, and also reducing the risk of the pole lug 102 warping due to the crease generated when the pole lug 102 is pressed, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery.
  • the extended surface of the first surface 2 intersects with the extended surface of the second surface 4 .
  • the extended surface of the first surface 2 may intersect with the extended surface of the second surface 4.
  • the extended surface of the first surface 2 is the extended surface of the first surface 2 extending from the first edge 5;
  • the extended surface of the second surface 4 is the extended surface of the second surface 4 extending from the second edge 6.
  • the two extended surfaces intersect, that is, when the first surface 2 and the transition surface 3 extend along the second direction Y, the first surface 2 and the second surface 4 are not parallel, and the extended surface of the first surface 2 and the extended surface of the transition surface 3 intersect at the first reference line 18, which is an imaginary virtual line.
  • the extending direction of the first surface 2 and the second surface 4 is used as the observation direction, wherein the viewing direction of Fig. 7 is the same as the observation direction.
  • the extended surface of the first surface 2 and the extended surface of the second surface 4 are two intersecting straight lines.
  • the extended surface of the first surface 2 and the extended surface of the second surface 4 may not intersect, and in this case, the first surface 2 and the second surface 4 are parallel to each other.
  • the extended surface of the first surface 2 is orthogonal to the extended surface of the second surface 4 .
  • the extended surface of the first surface 2 and the extended surface of the second surface 4 may be orthogonal, that is, during the lamination process, the first surface 2 is arranged in the horizontal direction, and the second surface 4 is arranged in the vertical direction.
  • the extending direction of the first surface 2 and the second surface 4 is taken as the observation direction, wherein the viewing angle direction of FIG. 7 is the same as the observation direction.
  • the extended surface of the first surface 2 and the extended surface of the second surface 4 are two mutually perpendicular straight lines.
  • the first surface 2 is a plane
  • the transition surface 3 is a curved surface
  • the second reference plane 8 is parallel to the first reference plane 7
  • the second reference plane 8 is tangent to the transition surface 3
  • the distance between the first reference plane 7 and the second reference plane 8 is d1
  • the extended surface of the first surface 2 and the extended surface of the second surface 4 intersect at the first reference line 18
  • the first reference line 18 is parallel to the first reference plane 7
  • the distance between the first reference line 18 and the first reference plane 7 is d2, satisfying: 0.3d2 ⁇ d1 ⁇ 0.7d2.
  • the first surface 2 may be a plane
  • the transition surface 3 may be a curved surface.
  • the first reference plane 7 and the second reference plane 8 are both imaginary virtual planes.
  • the distance between the first reference plane 7 and the second reference plane 8 is d1.
  • the first surface 2 and the transition surface 3 extend along the second direction Y, and the first reference line 18 formed thereby is parallel to the first reference plane 7, and the distance between the first reference line 18 and the first reference plane 7 is d2, satisfying: 0.3d2 ⁇ d1 ⁇ 0.7d2.
  • the method of measuring d1 and d2 can be, on the surface connected to both the first surface 2 and the transition surface 3, draw a straight line connecting the first edge 5 and the second edge 6, take a flat plate tangent to the transition surface 3 and parallel to the straight line, measure the distance between the flat plate and the straight line, which is the size of d1. Then take two flat plates respectively attached to the first surface 2 and the second surface 4, and the two flat plates intersect, measure the distance between the flat plate tangent to the transition surface 3 and the intersection of the two flat plates, which is the size of d2.
  • the first surface 2 is a plane
  • the transition surface 3 is an arc surface
  • the distance between the first reference plane 7 and the second reference plane 8 is d1
  • the distance between the first reference line 18 and the first reference plane 7 is d2, which satisfies 0.3d2 ⁇ d1 ⁇ 0.7d2.
  • the contact area between the transition surface 3 and the tab 102 can be increased, reducing the risk of the tab 102 being damaged by the second edge 6 of the conductive block 1 abutting against the tab 102, and also reducing the risk of the tab 102 being lifted due to the folds generated when the tab 102 is pressed, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery.
  • the risk of the tab 102 being damaged by the excessive protrusion of the transition surface 3 from the first reference plane 7 can be reduced, and the risk of the tab 102 being damaged by the stress concentration caused by the abutment of the first edge 5 against the tab 102 can also be reduced.
  • the conductive block 1 has a third surface 9 connected to the second surface 4, the third surface 9 is parallel to the first surface 2, and the distance between the first surface 2 and the third surface 9 is d3, which satisfies: 0 ⁇ d3 ⁇ 50mm.
  • the conductive block 1 has a third surface 9, which is connected to the second surface 4 and parallel to the first surface 2.
  • the first surface 2 can be arranged in the horizontal direction
  • the second surface 4 can be arranged in the vertical direction
  • the third surface 9 can be arranged in the horizontal direction.
  • the distance between the first surface 2 and the third surface 9 is d3, that is, the height of the conductive block 1 when the tab 102 is pressed.
  • the first surface 2 can be arranged in a horizontal direction
  • the third surface 9 can be arranged in a horizontal direction
  • the second surface 4 can be arranged obliquely upward in a direction away from the main body 101 of the electrode assembly 100 .
  • the distance between the first surface 2 and the third surface 9 is d3, which satisfies: 0 ⁇ d3 ⁇ 50mm.
  • d3 can be: 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc.
  • the distance d3 between the first surface 2 and the third surface 9 can be measured by selecting two ends of a caliper to clamp the first surface 2 and the third surface 9, and the vertical distance d3 between the first surface 2 and the third surface 9 is measured.
  • the third surface 9 is connected to the second surface 4 and the third surface 9 is parallel to the second surface 4, and the distance d3 between the first surface 2 and the third surface 9 satisfies 0 ⁇ d3 ⁇ 50mm.
  • the electrode assembly 100 is subjected to a withstand voltage test, the two ends of the main body 101 of the electrode assembly 100 can be clamped by the pressing plate, and the pole ear 102 can be pressed by the conductive block 1.
  • d3 ⁇ 50mm the risk of interference between the conductive block 1 and the pressing plate due to excessive size can be reduced, thereby improving the convenience of pressing the pole ear 102 by the conductive block 1.
  • the distance between the first surface 2 and the third surface 9 is d3, which satisfies: 10 mm ⁇ d3 ⁇ 20 mm.
  • d3 may be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, etc.
  • the distance d3 between the first surface 2 and the third surface 9 satisfies 10mm ⁇ d3 ⁇ 20mm.
  • the conductive block 1 has a certain thickness, which is convenient for pressing the tab 102 and improves the convenience of operation.
  • d3 ⁇ 20mm the risk of interference between the conductive block 1 and the pressing plate due to excessive size can be better reduced, thereby improving the convenience of pressing the conductive block 1 with the tab 102.
  • the first surface 2 is parallel to the second surface 4, and the distance between the first surface 2 and the second surface 4 is d4, which satisfies: 0 ⁇ d4 ⁇ 50mm.
  • the second surface 4 is connected to the transition surface 3, and the second surface 4 is parallel to the first surface 2.
  • the first surface 2 can be arranged in the horizontal direction, and the second surface 4 can also be arranged in the horizontal direction.
  • the distance between the first surface 2 and the second surface 4 is d4, that is, the height of the conductive block 1 when the tab 102 is pressed.
  • the distance between the first surface 2 and the second surface 4 is d4, which satisfies: 0 ⁇ d4 ⁇ 50mm.
  • d4 can be: 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc.
  • the distance d4 between the first surface 2 and the second surface 4 can be measured by selecting the two ends of the caliper to clamp The first surface 2 and the second surface 4 , the vertical distance measured between the first surface 2 and the third surface 9 is d4.
  • the first surface 2 is parallel to the second surface 4, and the distance d4 between the first surface 2 and the second surface 4 satisfies 0 ⁇ d4 ⁇ 50mm.
  • the electrode assembly 100 is subjected to a withstand voltage test, the two ends of the main body 101 of the electrode assembly 100 can be clamped by the pressing plate, and then the tab 102 can be pressed by the conductive block 1.
  • d4 ⁇ 50mm the risk of the conductive block 1 interfering with the pressing plate due to its oversized size can be reduced, thereby improving the convenience of pressing the tab 102 by the conductive block 1.
  • the distance between the first surface 2 and the second surface 4 is d4, which satisfies: 10 mm ⁇ d4 ⁇ 20 mm.
  • d4 can be: 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, etc.
  • the distance d4 between the first surface 2 and the second surface 4 satisfies 10mm ⁇ d4 ⁇ 20mm.
  • the conductive block 1 has a certain thickness, which is convenient for pressing the tab 102 and improves the convenience of operation.
  • d4 ⁇ 20mm the risk of interference between the conductive block 1 and the pressing plate due to excessive size can be better reduced, and the convenience of pressing the conductive block 1 with the tab 102 is improved.
  • the first surface 2, the transition surface 3, and the second surface 4 can all be planes.
  • the angle between the first surface 2 and the transition surface 3 can be an obtuse angle.
  • the first surface 2 can be arranged in the horizontal direction
  • the transition surface 3 can be arranged obliquely upward in the direction close to the main body 101 of the electrode assembly 100
  • the second surface 4 can be arranged in the vertical direction.
  • the conductive block 1 also has a third surface 9, a fourth surface 16 and two oppositely arranged fifth surfaces 17, one end of the third surface 9 is connected to the second surface 4, and the third surface 9 can be parallel to the first surface 2.
  • One end of the fourth surface 16 is connected to an end of the third surface 9 away from the third surface, the fourth surface 16 can be arranged in the vertical direction, the fourth surface 16 is parallel to the second surface 4, and the other end of the fourth surface 16 is connected to an end of the first surface 2 away from the transition surface 3.
  • the first surface 2, the transition surface 3, the second surface 4, the third surface 9 and the fourth surface 16 all extend along the second direction Y. In this extension direction, the first surface 2, the transition surface 3, the second surface 4, the third surface 9 and the fourth surface 16 are surrounded by two oppositely arranged fifth surfaces 17.
  • the first surface 2 and the second surface 4 can both be planes, and the transition surface 3 can be an arc surface.
  • the first edge 5 and the second edge 6 of the transition surface 3 define a first reference plane 7, and the angle between the first surface 2 and the first reference plane 7 can be an obtuse angle.
  • the first surface 2 can be arranged in the horizontal direction
  • the transition surface 3 can be protruding from the first reference plane 7, and is arranged in a direction close to the main body 101 of the electrode assembly 100.
  • the second surface 4 can be arranged in the vertical direction.
  • the conductive block 1 also has a third surface 9, a fourth surface 16, and two fifth surfaces 17.
  • One end of the third surface 9 is connected to the second surface 4, and the third surface 9 can be parallel to the first surface 2.
  • One end of the fourth surface 16 is connected to an end of the third surface 9 away from the third surface, and the fourth surface 16 can be arranged in the vertical direction.
  • the fourth surface 16 is parallel to the second surface 4, and the other end of the fourth surface 16 is connected to an end of the first surface 2 away from the transition surface 3.
  • the first surface 2, the transition surface 3, the second surface 4, the third surface 9 and the fourth surface 16 all extend along the second direction Y. In this extension direction, the first surface 2, the transition surface 3, the second surface 4, the third surface 9 and the fourth surface 16 are surrounded by two fifth surfaces 17, and the two fifth surfaces 17 are parallel.
  • a withstand voltage test is performed on the electrode assembly 100 through the conductive block 1.
  • the first edge 5 and the second edge 6 can abut against the pole ear 102, and the angle between the first surface 2 and the transition surface 3 is an obtuse angle, or the angle between the first reference plane 7 and the first surface 2 is an obtuse angle, thereby reducing the risk of stress concentration and damage to the pole ear 102 when the conductive block 1 is pressed onto the pole ear 102, and also reducing the risk of the pole ear 102 warping due to the crease generated when the pole ear 102 is pressed, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery.
  • the conductive block 1 may be processed in an integrally formed manner.
  • the conductive block 1 may be made of metal material, for example, copper, iron, nickel, etc.
  • Figure 10 is a schematic diagram of the structure of the detection mechanism 10 provided in some embodiments of the present application
  • Figure 11 is a schematic diagram of another viewing angle of the detection mechanism 10 in Figure 10.
  • another viewing angle in Figure 11 is a viewing angle with the third direction Z as the observation direction, wherein the third direction can be represented by Z, the third direction Z can be perpendicular to the second direction Y in pairs, and the third direction Z can be a direction perpendicular to the fourth surface 16.
  • the embodiment of the present application also provides a detection mechanism 10 for the withstand voltage test of the electrode assembly 100, the detection mechanism 10 includes a conductive block 1, a first pressing plate 11, a second pressing plate 12 and an elastic member 13 of any embodiment in the first aspect, the conductive block 1 is used to press the pole ear 102 of the electrode assembly 100, the first pressing plate 11 and the second pressing plate 12 are arranged at intervals along the first direction X, and the first pressing plate 11 and the second pressing plate 12 are used to clamp the main body 101 of the electrode assembly 100; one end of the elastic member 13 is connected to the first pressing plate 11, and the other end is connected to the conductive block 1.
  • the first pressing plate 11 and the second pressing plate 12 when pressing the tab 102, may be spaced apart in the first direction X, and the conductive block 1 is connected to the first pressing plate 11 through the elastic member 13.
  • One end of the main body 101 of the electrode assembly 100 is disposed on the second pressing plate 12, the first pressing plate 11 abuts against the other end of the main body 101 in the first direction X, and the first pressing plate 11 and the second pressing plate 12 jointly clamp the main body 101.
  • the tab 102 is disposed in the horizontal direction, and the tab 102 may be a multi-layer tab 102, and the conductive block 1 presses the portion of the tab 102 close to the first pressing plate 11 in the first direction X.
  • the direction indicated by the letter X may be a first direction X.
  • the first direction X may be a vertical direction.
  • the first pressing plate 11 and the second pressing plate 12 respectively clamp the two end surfaces of the main body 101 of the electrode assembly 100 in the first direction X, and the conductive block 1 moves close to the second pressing plate 12 along the first direction X through the deformation of the elastic member 13 until the electrode tab 102 is pressed.
  • the conductive block 1 is connected to the external short-circuit control mechanism through an external conductive wire, so that the electrode assembly 100 is powered on and subjected to a withstand voltage test.
  • the principle of the external short-circuit control mechanism can be that when the short-circuit control mechanism sends a high-voltage signal to the electrode assembly 100 to be tested, when the pressure holding section of the test curve of the electrode assembly 100 to be tested is inconsistent with the standard curve, it is determined that the electrode assembly 100 may be a micro-short-circuit electrode assembly 100.
  • the elastic member 13 may be a spring.
  • the elastic member 13 and the first pressing plate 11 may be connected by welding or bonding.
  • the elastic member 13 and the conductive block 1 may be connected by welding or bonding.
  • the detection mechanism 10 performs a withstand voltage test on the electrode assembly 100.
  • the detection mechanism 10 includes a first pressing plate 11, a second pressing plate 12, a conductive block 1 and an elastic member 13.
  • the first pressing block and the second pressing block jointly clamp the main body 101 of the electrode assembly 100.
  • the conductive block 1 is connected to the first pressing block through the elastic member 13.
  • the conductive block 1 presses the tab 102 of the electrode assembly 100.
  • the detection mechanism 10 performs a withstand voltage test on the electrode assembly 100, which reduces the risk of damaging the tab 102 and the risk of the tab 102 warping due to the creases caused by the conductive block 1 pressing the tab 102, thereby improving the reliability of the electrode assembly 100, thereby improving the reliability of the battery cell 105 and the battery.
  • the conductive block 1 is constructed in two pieces, and the two conductive blocks 1 are used to press the positive electrode tab 103 and the negative electrode tab 104 of the electrode assembly 100 respectively.
  • the number of conductive blocks 1 can be two, respectively pressing the positive electrode tab 103 and the negative electrode tab 104.
  • the embodiment of the present application takes the positive electrode tab 103 and the negative electrode tab 104 as an example in which the positive electrode tab 103 and the negative electrode tab 104 are located at the same end of the main body 101.
  • the technical solution of the embodiment of the present application improves the detection efficiency and convenience by respectively pressing the positive electrode tab 103 and the negative electrode tab 104 together with two conductive blocks 1, and pressing the positive electrode tab 103 and the negative electrode tab 104 together at the same time.
  • the distance between the two conductive blocks 1 is adjustable to accommodate electrode assemblies 100 of different sizes.
  • different electrode assemblies 100 have different sizes of their main bodies 101 in the horizontal direction, so the distance between the two conductive blocks 1 needs to be adjusted to improve the convenience of operation.
  • two conductive blocks 1 are respectively pressed together with the positive electrode tab 103 and the negative electrode tab 104.
  • the distances between the positive electrode tab 103 and the negative electrode tab 104 are different.
  • electrode assemblies 100 of different sizes can be adapted to press together the positive electrode tab 103 and the negative electrode tab 104 of different distances, thereby improving the practicality and applicability of the detection mechanism 10.
  • a slide bar 14 and a slider 15 are disposed on the first pressing plate 11 .
  • the slider 15 is slidably disposed on the slide bar 14 .
  • One end of the elastic member 13 is connected to the slider 15 , and the other end is connected to the conductive block 1 .
  • the first pressing plate 11 is provided with a sliding rod 14.
  • the sliding rod 14 When the tab 102 is pressed, the sliding rod 14 can be arranged in the horizontal direction, and the connection between the sliding rod 14 and the first pressing plate 11 can be welding.
  • the slider 15 is arranged on the sliding rod 14, and the sliding rod 14 can be regarded as a slideway extending in the horizontal direction.
  • the slider 15 can move relative to the sliding rod 14 on the sliding rod 14.
  • One end of the elastic member 13 is connected to the slider 15, and the other end is connected to the conductive block 1. That is, by moving the slider 15, the conductive block 1 can be moved in the horizontal direction.
  • a buckle can be provided between the slider 15 and the slide bar 14.
  • the slider 15 needs to be fixed on the slide bar 14 to fix the horizontal position of the conductive block 1, the slider 15 is locked on the slide bar 14 by the buckle; when the slider 15 needs to move on the slide bar 14 to change the horizontal position of the conductive block 1, the buckle is released to allow the slider 15 to move on the slide bar 14 relative to the slide bar 14.
  • the technical solution of the embodiment of the present application is to set a sliding rod 14 on the first pressure plate 11, and connect the conductive block 1 to the slider 15 through the elastic member 13.
  • the slider 15 can slide on the sliding rod 14 to adjust the distance between the two conductive blocks 1, thereby improving the applicability and practicality of the detection mechanism 10.
  • the sliding rod 14 and the slider 15 are simple in structure, easy to obtain, and cost-saving.

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Abstract

一种导电块及检测机构，导电块（1）用于压合电极组件（100）的极耳（102）以进行耐压检测，导电块（1）包括过渡面（3），过渡面（3）与极耳（102）被压合后形成的斜面相匹配。通过导电块（1）对电极组件（100）进行耐压检测，过渡面（3）与极耳（102）被压合后形成的斜面相匹配，降低了导电块（1）压合极耳（102）时与极耳（102）抵接导致应力集中从而损坏极耳（102）的风险，同时也降低了压合极耳（102）时产生的折痕导致极耳（102）起翘的风险，从而提高了电极组件（100）的可靠性，进而提高了电池单体（105）和电池（110）的可靠性。

Description

导电块及检测机构
相关申请的交叉引用
本申请要求享有于2023年7月4日提交的名称为“导电块及检测机构”的中国专利申请202310813013.X的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池生产技术领域，具体而言，涉及一种导电块及检测机构。
背景技术
节能减排是汽车产业可持续发展的关键，电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言，电池技术又是关乎其发展的一项重要因素。
在电池技术的发展中，如何提高电池的可靠性，是电池技术中一个亟需解决的技术问题。
发明内容
本申请提供一种导电块及检测机构，其能够提高电池的可靠性。
本申请是通过下述技术方案实现的：
第一方面，本申请提供一种导电块，用于压合电极组件的极耳以进行耐压检测，导电块包括过渡面，过渡面与极耳被压合后形成的斜面相匹配。
本申请实施例的技术方案，通过导电块对电极组件进行耐压检测，过渡面与极耳被压合后形成的斜面相匹配，降低了导电块压合极耳时与极耳抵接导致应力集中从而损坏极耳的风险，以及导电块与极耳抵接导致应力集中损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，导电块还包括第一表面，第一表面用于压合极耳，过渡面与第一表面相邻设置。
在一些实施例中，第一表面和过渡面均为平面，第一表面与过渡面所成的角度为钝角。
本申请实施例的技术方案，通过导电块对电极组件进行耐压检测，导电块的第一表面压合电极组件的极耳，当过渡面和第一表面均为平面时，过渡面与第一表面的夹角为钝角。在第一表面压合极耳时，过渡面与第一表面的夹角为钝角，降低了导电块与极耳抵接时对应的角度过小导致应力集中损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，第一表面与过渡面之间的角度为α1，满足：110°≤α1≤150°。
本申请实施例的技术方案，第一表面和过渡面均为平面，第一表面和过渡面之间的角度α1满足110°≤α1≤150°。当α1≥110°时，降低了导电块与极耳抵接的第一边缘对应的角度过小导致应力集中损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。当α1≤150°时，降低了导电块与极耳抵接的第二边缘对应的角度过小导致应力集中损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，第一表面为平面，过渡面为弧面。
在一些实施例中，过渡面与第一表面相切。
本申请实施例的技术方案，当第一表面为平面且过渡面为弧面时，过渡面与第一表面相切，使得导电块压合极耳时，第一表面抵接极耳更加平滑，降低了第一表面与极耳抵接导致极耳损坏的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，导电块还包括第二表面，第一表面、过渡面和第二表面沿导电块的周向依次设置，第一表面与过渡面相交于第一边缘，过渡面与第二表面连接且相交于第二边缘；其中，第一边缘和第二边缘限定出第一参考平面，过渡面为凸出于第一参考平面的弧面。
本申请实施例的技术方案，通过导电块对电极组件进行耐压检测，导电块的第一表面压合电极组件的极耳，第一表面通过第一边缘与过渡面相连，第二表面通过第二边缘与过渡面相连。在第一表面压合极耳时，第一边缘和第二边缘可以与极耳抵接，降低了导电块压合极耳时只有一个边缘与极耳抵接导致应力集中从而损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，第一参考平面与第一表面所成的角度为钝角。
本申请实施例的技术方案，当过渡面为弧面时，第一边缘和第二边缘限定出的第一参考平面与第一表面的夹角为钝角。在第一表面压合极耳时，第一边缘和第二边缘可以与极耳抵接，且第一参考平面与第一表面的夹角为钝角，降低了导电块压合极耳时只有一个边缘与极耳抵接导致应力集中从而损坏极耳的风险，以及导电块与极耳抵接的第一边缘对应的角度过小导致应力集中损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，第一参考平面与第一表面之间的角度为α2，满足：110°≤α2≤150°。
本申请实施例的技术方案，第一表面为平面，过渡面为弧面，第一表面和第一参考平面之间的角度α2满足110°≤α2≤150°。当α2≥110°时，降低了导电块与极耳抵接的第一边缘对应的角度过小导致应力集中损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。当α2≤150°时，降低了导电块与极耳抵接的第二边缘对应的角度过小导致应力集中损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，过渡面与第二表面相切。
本申请实施例的技术方案，当第二表面为平面且过渡面为弧面时，过渡面与第二表面相切，使得导电块压合极耳时，第二边缘与极耳抵接更加平滑，降低了导电块的第二边缘与极耳抵接导致极耳损坏的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，第一表面的延长面与第二表面的延长面相交。
在一些实施例中，第一表面的延长面与第二表面的延长面正交。
在一些实施例中，第一表面为平面，过渡面为弧面，第二参考平面与第一参考平面平行，且第二参考平面与过渡面相切，第一参考平面与第二参考平面之间的距离为d1，第一表面的延长面与第二表面的延长面相交于第一参考线，第一参考线与第一参考平面平行，且第一参考线与第一参考平面之间的距离为d2，满足：0.3d2≤d1≤0.7d2。
本申请实施例的技术方案，第一参考平面与第二参考平面之间的距离为d1，第一参考线与第一参考平面之间的距离为d2，满足0.3d2≤d1≤0.7d2。当d1≥0.3d2时，能够增大过渡面与极耳的接触面积，降低了导电块的第二边缘与极耳抵接导致极耳损坏的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。当d1≤0.7d2时，能够降低过渡面凸出于第一参考平面的部分过多从而导致损坏极耳的风险，也能降低过渡面凸出于第一参考平面的部分过多从而导致第二边缘与极耳不抵接进而导致第一边缘与极耳抵接应力集中损坏极耳的风险。
在一些实施例中，导电块具有与第二表面相连的第三表面，第三表面与第一表面平行且第一表面和第三表面之间的距离为d3，满足：0＜d3≤50mm。
本申请实施例的技术方案，第三表面与第二表面相连且第三表面与第二表面平行，第一表面与第三表面之间的距离d3满足0＜d3≤50mm。在对电极组件进行耐压检测时，可以通过压板夹持电极组件的本体的两端之后，通过导电块对极耳进行压合，当d3≤50mm时，能够降低导电块因为尺寸过大导致与压板干涉的风险，提高了导电块压合极耳的便利性。
在一些实施例中，10mm≤d3≤20mm。
本申请实施例的技术方案，第一表面与第三表面之间的距离d3满足10mm≤d3≤20mm。当d3≥10mm时，导电块具有一定的厚度，便于压合极耳，提高了操作的便利性。当d3≤20mm时，能够更好地降低导电块因为尺寸过大导致与压板干涉的风险，提高了导电块压合极耳的便利性。
在一些实施例中，第一表面与第二表面平行，第一表面和第二表面之间的距离为d4，满足：0＜d4≤50mm。
本申请实施例的技术方案，第一表面与第二表面平行，第一表面与第二表面之间的距离d4满足0＜d4≤50mm。在对电极组件进行耐压检测时，可以通过压板夹持电极组件的本体的两端之后，通过导电块对极耳进行压合，当d4≤50mm时，能够降低导电块因为尺寸过大导致与压板干涉的风险，提高了导电块压合极耳的便利性。
在一些实施例中，10mm≤d4≤20mm。
本申请实施例的技术方案，第一表面与第二表面之间的距离d4满足10mm≤d4≤20mm。当d4≥10mm时，导电块具有一定的厚度，便于压合极耳，提高了操作的便利性。当d4≤20mm时，能够更好地降低导电块因为尺寸过大导致与压板干涉的风险，提高了导电块压合极耳的便利性。
第二方面，本申请还提供一种检测机构，用于电极组件的耐压测试，检测机构包括第一方面中任一实施例的导电块、第一压板、第二压板和弹性件，导电块用于压合电极组件的极耳，第一压板和第二压板沿第一方向间隔设置，第一压板和第二压板用于夹持电极组件的主体；弹性件的一端与第一压板连接，另一端与导电块连接。
本申请实施例的技术方案，检测机构对电极组件进行耐压测试，检测机构包括第一压板、第二压板、导电块和弹性件，第一压块和第二压块共同夹持电极组件的主体，导电块通过弹性件与第一压块连接，导电块压合电极组件的极耳。检测机构对电极组件进行耐压测试，降低了损坏极耳的风险，以及导电块压合极耳产生的折痕导致极耳起翘的风险，提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
在一些实施例中，导电块构造为两个，两个导电块分别用于压合电极组件的正极极耳和负极极耳。
本申请实施例的技术方案，通过两个导电块分别压合正极极耳和负极极耳，同时压合正极极耳和负极极耳，提高了检测效率和便利性。
在一些实施例中，两个导电块之间的距离可调以适配不同尺寸的电极组件。
本申请实施例的技术方案，两个导电块分别压合正极极耳和负极极耳，不同尺寸的电极组件，正极极耳与负极极耳之间的距离不同，通过调节两个导电块之间的距离，来适配不同尺寸的电极组件，以压合不同距离的正极极耳和负极极耳，提高了检测机构的实用性和适用性。
在一些实施例中，第一压板上设置有滑杆和滑块，滑块可滑动地设置在滑杆上，弹性件的一端与滑块连接，另一端与导电块连接。
本申请实施例的技术方案，通过在第一压板上设置滑杆，并将导电块通过弹性件连接在滑块上，滑块能够在滑杆上滑动，以实现两个导电块之间的距离调节，提高了检测机构的适用性和实用性，且滑杆和滑块结构简单，容易获得，也节约了成本。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例提供的车辆的结构示意图；
图2为本申请一些实施例提供的电池的结构示意图；
图3为本申请一些实施例提供的电池单体的结构示意图；
图4为本申请一些实施例提供的导电块的结构示意图；
图5为图4中导电块另一视角的示意图；
图6为本申请另一些实施例提供的导电块的结构示意图；
图7为图6中导电块另一视角的示意图；
图8为本申请又一些实施例提供的导电块的示意图；
图9为本申请再一些实施例提供的导电块的示意图；
图10为本申请一些实施例提供的检测机构的结构示意图；
图11为图10中检测机构另一视角的示意图。
图标：1-导电块；2-第一表面；3-过渡面；4-第二表面；5-第一边缘；6-第二边缘；7-第一参考平面；8-第二参考平面；9-第三表面；10-检测机构；11-第一压板；12-第二压板；13-弹性件；14-滑杆；15-滑块；16-第四表面；17-第五表面；18-第一参考线；19-子表面；100-电极组件；101-主体；102-极耳；103-正极极耳；104-负极极耳；105-电池单体；106-外壳；107-电极端子；108-壳体；109-端盖；110-电池；111-电池箱体；112-第一子箱体；113-第二子箱体；1000-车辆；1100-控制器；1200-马达；X-第一方向；Y-第二方向；Z-第三方向。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，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，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本申请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；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限定本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不 是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本申请所描述的实施例可以与其它实施例相结合。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
本申请中出现的“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
在一些实施例中，电池可以为电池模块，电池单体有多个时，多个电池单体排列并固定形成一个电池模块。
在一些实施例中，电池可以为电池包，电池包包括箱体和电池单体，电池单体或电池模块容纳于箱体中。
在一些实施例中，箱体可以作为车辆的底盘结构的一部分。例如，箱体的部分可以成为车辆的地板的至少一部分，或者，箱体的部分可以成为车辆的横梁和纵梁的至少一部分。
在一些实施例中，电池可以为储能装置。储能装置包括储能集装箱、储能电柜等。
本申请实施例中，电池单体可以为二次电池，二次电池是指在电池单体放电后可通过充电的方式使活性材料激活而继续使用的电池单体。
电池单体可以但不限于为锂离子电池、钠离子电池、钠锂离子电池、锂金属电池、钠金属电池、锂硫电池、镁离子电池、镍氢电池、镍镉电池、铅蓄电池等。
作为示例，电池单体可以为圆柱形电池单体、棱柱电池单体、软包电池单体或其它形状的电池单体，棱柱电池单体包括方壳电池单体、刀片形电池单体、多棱柱电池，多棱柱电池例如为六棱柱电池等，本申请实施例没有特别的限制。
电池单体一般包括电极组件。电极组件包括正极、负极以及隔离件。在电池单体充放电过程中，活性离子(例如锂离子)在正极和负极之间往返嵌入和脱出。隔离件设置在正极和负极之间，可以起到防止正负极短路的作用，同时可以使活性离子通过。
在一些实施例中，正极可以为正极极片，正极极片可以包括正极集流体以及设置在正极集流体至少一个表面的正极活性材料。
作为示例，正极集流体具有在其自身厚度方向相对的两个表面，正极活性材料设置在正极集流体相对的两个表面的任意一者或两者上。
作为示例，正极集流体可采用金属箔片或复合集流体。例如，作为金属箔片，可以采用表面镀银处理的铝、表面镀银处理的不锈钢、不锈钢、铜、铝、镍、炭精电极、碳、镍或钛等。复合集流体可包括高分子材料基层和金属层。复合集流体可通过将金属材料(铝、铝合金、镍、镍合金、钛、钛合金、银及银合金等)形成在高分子材料基材(如聚丙烯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚苯乙烯、聚乙烯等的基材)上而形成。
作为示例，正极活性材料可包括以下材料中的至少一种：含锂磷酸盐、锂过渡金属氧化物及其各自的改性化合物。但本申请并不限定于这些材料，还可以使用其他可被用作电池正极活性材料的传统材料。
在一些实施例中，负极可以为负极极片，负极极片可以包括负极集流体。
作为示例，负极集流体可采用金属箔片或复合集流体。例如，作为金属箔片，可以采用表面镀银处理的铝、表面镀银处理的不锈钢、不锈钢、铜、铝、镍、炭精电极、用碳、镍或钛等。
在一些实施例中，负极集流体具有在其自身厚度方向相对的两个表面，负极活性材料设置在负极集流体相对的两个表面中的任意一者或两者上。
作为示例，负极活性材料可采用本领域公知的用于电池的负极活性材料。作为示例，负极活性材料可包括以下材料中的至少一种：人造石墨、天然石墨、软炭、硬炭、硅基材料、锡基材料和钛酸锂等。硅基材料可选自单质硅、硅氧化合物、硅碳复合物、硅氮复合物以及硅合金中的至少一种。锡基材料可选自单质锡、锡氧化合物以及锡合金中的至少一种。但本申请并不限定于这些材料，还可以使用其他可被用作电池负极活性材料的传统材料。这些负极活性材料可以仅单独使用一种，也可以将两种以上组合使用。
在一些实施方式中，隔离件为隔膜。本申请对隔膜的种类没有特别的限制，可以选用任意公知的具有良好的化学稳定性和机械稳定性的多孔结构隔膜。
作为示例，隔膜的主要材质可选自玻璃纤维、无纺布、聚乙烯、聚丙烯及聚偏二氟乙烯，陶瓷中的至少一种。隔膜可以是单层薄膜，也可以是多层复合薄膜，没有特别限制。在隔膜为多层复合薄膜时，各层的材料可以相同或不同，没有特别限制。隔离件可以是单独的一个部件位于正负极之间，也可以附着在正负极的表面。
在一些实施方式中，隔离件为固态电解质。固态电解质设于正极和负极之间，同时起到传输离子和隔离正负极的作用。
在一些实施方式中，电极组件为卷绕结构。正极极片、负极极片卷绕成卷绕结构。
目前，从市场形势的发展来看，电池已被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及电动工具、无人机、储能设备等多个领域。随着电池用领域的不断扩大，其市场的需求量也在不断地扩增。
电池技术的发展要同时考虑多方面的设计因素，例如，能量密度、循环寿命、放电容量、充放电倍率等性能参数，另外，随着环境条件和/或电池内部条件的改变，电池的可靠性问题也是重点考虑的因素之一。
目前，对于生产出的电极组件，在使用之前通常会进行耐压测试，也即短路测试。测试的方式为通过导电块压合极耳并与极耳实现电连接，并通过外接的耐压测试机构与导电块电连接，实现电极组件的耐压测试。
然而，在导电块压合电极组件的极耳的过程中，导电块通过外周面压合极耳时，极耳的层数可能较多，其多层极耳的厚度较大，现有的导电块在压合极耳时，产生的折痕可能会使得极耳起翘，导致电极组件成型为电池单体时，电极组件的极耳与连接片或者顶盖焊接时出现漏焊等焊接不良的风险，或者是折痕部分的应力过于集中从而损坏极耳，从而影响电池单体的可靠性，进而影响电池的可靠性。
基于上述考虑，为了降低导电块与极耳抵接导致应力集中从而损坏极耳的风险，以及为了降低压合极耳时产生的折痕导致极耳起翘从而导致漏焊等焊接不良的风险，从而能提高电极组件的可靠性和电池的可靠性。本申请实施例提供了一种导电块，用于压合电极组件的极耳以进行耐压检测，导电块包括过渡面，过渡面与极耳被压合后形成的斜面相匹配。
通过导电块对电极组件进行耐压检测，过渡面与极耳被压合后形成的斜面相匹配，降低了导电块压合极耳时与极耳抵接导致应力集中从而损坏极耳的风险，以及导电块与极耳抵接导致应力集中损坏极耳的风险，同时也降低了压合极耳时产生的折痕导致极耳起翘的风险，从而提高了电极组件的可靠性，从而提高了电池单体和电池的可靠性。
本申请实施例公开的电池可以但不限用于车辆、船舶或飞行器等用电设备中。可以使用具备本申请公开的电池组成该用电设备的电源系统。
本申请实施例提供一种使用电池作为电源的用电设备，用电设备可以为但不限于手机、平板电脑、笔记本电脑、电动玩具、电动工具、电动自行车、电动摩托车、电动汽车、轮船、航天器等等。其中，电动玩具可以包括固定式或移动式的电动玩具，例如，游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等，航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明，以本申请一些实施例的一种用电设备为车辆1000为例进行说明。
请参照图1，图1为本申请一些实施例提供的车辆1000的结构示意图。车辆1000可以为燃油汽车、燃气汽车或新能源汽车，新能源汽车可以是纯电动汽车、混合动力汽车或增程式汽车等。车辆1000的内部设置有电池110，电池110可以设置在车辆1000的底部或头部或尾部。电池110可以用于车辆1000的供电，例如，电池110可以作为车辆1000的操作电源，用于车辆1000的电路系统，例如用于车辆1000的启动、导航和运行时的工作用电需求。
车辆1000还可以包括控制器1100和马达1200，控制器1100用来控制电池110为马达1200供电，例如，用于车辆1000的启动、导航和行驶时的工作用电需求。
在本申请一些实施例中，电池110不仅可以作为车辆1000的操作电源，还可以作为车辆1000的驱动电源，代替或部分地代替燃油或天然气为车辆1000提供驱动动力。
请参照图2，图2为本申请一些实施例提供的电池110的爆炸图。电池110还可以包括电池箱体111，电池单体105容纳于电池箱体111内。其中，电池箱体111用于为电池单体105提供容纳空间，电池箱体111可以采用多种结构。在一些实施例中，电池箱体111可以包括第一子箱体112和第二子箱体113，第一子箱体112与第二子箱体113相互盖合，第一子箱体112和第二子箱体113共同限定出用于容纳电池单体105的容纳空间。第二子箱体113可以为一端开口的空心结构，第一子箱体112可以为板状结构，第一子箱体112盖合于第二子箱体113的开口侧，以使第一子箱体112与第二子箱体113共同限定出容纳空间；第一子箱体112和第二子箱体113也可以是均为一侧开口的空心结构，第一子箱体112的开口侧盖合于第二子箱体113的开口侧。
在电池110中，电池单体105可以是多个，多个电池单体105之间可串联或并联或混联，混联是指多个电池单体105中既有串联又有并联。多个电池单体105之间可直接串联或并联或混联在一起，再将多个电池单体105构成的整体容纳于电池箱体111内；当然，电池110也可以是多个电池单体105先串联或并联或混联组成电池模块形式，多个电池模块再串联或并联或混联形成一个整体，并容纳于电池箱体111内。电池110还可以包括其他结构，例如，该电池110还可以包括汇流部件，用于实现多个电池单体105之间的电连接。
其中，电池单体105可以为二次电池或一次电池；电池单体105还可以是锂硫电池、钠离子电池或镁离子电池，但不局限于此。
请参照图3，图3为本申请一些实施例提供的电池单体105的爆炸图。如图3所示，电池单体105包括外壳106、电极组件100及电极端子107。外壳106包括壳体108和端盖109，壳体108具有开口，端盖109封闭开口，以将电池单体105的内部环境与外部环境隔绝。
壳体108是用于配合端盖109以形成电池单体105的内部环境的组件，其中，形成的内部环境可以用于容纳电极组件100、电解液以及其他部件。壳体108和端盖109可以是独立的部件。壳体108可以是多种形状和多种尺寸的。具体地，壳体108的形状可以根据电极组件100的具体形状和尺寸大小来确定。壳体108的材质可以是多种，比如，铜、铁、铝、不锈钢、铝合金、塑胶等。
端盖109是指盖合于壳体108的开口处以将电池单体105的内部环境隔绝于外部环境的部件。不限地，端盖109的形状可以与壳体108的形状相适应以配合壳体108。可选地，端盖109可以由具有一定硬度和强度的材质(如铝合金)制成，这样，端盖109在受挤压碰撞时就不易发生形变，使电池单体105能够具备更高的结构强度，可靠性也可以有所提高。端盖109上可以设置有如电极端子107等的功能性部件。电极端子107可以用于与电极组件100电连接，以用于输出或输入电池单体105的电能。端盖109的材质也可以是多种的，比如，铜、铁、铝、不锈钢、铝合金、塑胶等，本申请实施例对此不作特殊限制。在一些实施例中，在端盖109的内侧还可以设置有绝缘结构，绝缘结构可以用于隔离壳体108内的电连接部件与端盖109，以降低短路的风险。示例性的，绝缘结构可以是塑料、橡胶等。
电极组件100是电池单体105中发生电化学反应的部件。壳体108内可以包含一个或更多个电极组件100。电极组件100主要由正极极片和负极极片卷绕或层叠放置形成，并且通常在正极极片与负极极片之间设有隔离膜，隔离膜用于分隔正极极片和负极极片，以在一定程度上避免正极极片和负极极片内接短路。正极极片和负极极片具有活性物质的部分构成电极组件100的主体101，正极极片不具有活性物质的部分构成正极极耳103，负极极片不具有活性物质的部分构成负极极耳104。正极极耳103和负极极耳104可以共同位于主体101部的一端。在电池的充放电过程中，正极活性物质和负极活性物质与电解液发生反应，极耳102连接电极端子107以形成电流回路。
请参照图4至图9，图4为本申请一些实施例提供的导电块1的结构示意图，图5为图4中导电块1另一视角的示意图，图6为本申请另一些实施例提供的导电块1的结构示意图，图7为图6中导电块1另一视角的示意图，图8为本申请又一些实施例提供的导电块1的示意图，图9为本申请再一些实施例提供的导电块1的示意图。需要解释的是，图5、图7至图9中的视角为，以第二方向Y为观察方向的视角。其中，第二方向Y可以为垂直于第五表面17的方向。本申请实施例提供了一种导电块1，用于压合电极组件100的极耳102以进行耐压检测，导电块1包括过渡面3，过渡面3与极耳102被压合后形成的斜面相匹配。
在一些实施例中，耐压测试可以为通过导电块1压合极耳102，并与极耳102实现电连接，导电块1外接检测设备，检测电极组件100的通电是否合格。
在一些实施例中，极耳102可以为多层极耳102。其中，多层极耳102可以沿水平方向放置，多层极耳102的厚度方向可以为竖直方向，导电块1沿竖直方向向下移动，此时第一表面2位于水平方向并与多层极耳102的上层接触，并沿竖直方向压合多层极耳102，使得多层极耳102的总厚度减小。在压合过程中，多层极耳102的厚度减小，极耳102靠近主体101的部分发生形变，第一边缘5和第二边缘6均与极耳102抵接。
本申请实施例的技术方案，通过导电块1对电极组件100进行耐压检测，过渡面3与极耳102被压合后形成的斜面相匹配，降低了导电块1压合极耳102时与极耳102抵接导致应力集中从而损坏极耳102的风险，以及导电块1与极耳102抵接导致应力集中损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池110的可靠性。
在一些实施例中，导电块1还包括第一表面2，第一表面2用于压合极耳102，过渡面3与第一表面2相邻设置。
在一些实施例中，第一表面2和过渡面3均为平面，第一表面2与过渡面3所成的角度为钝角。
请参照图4至图5。在一些实施例中，第一表面2和过渡面3可以均为平面，第一表面2的实体表面和过渡面3的实体表面之间的角度为钝角，而非延伸面之间的角度。也即，在压合过程中，第一表面2沿水平方向设置时，过渡面3沿靠近电极组件100的主体101的方向斜向上设置，使得第一边缘5和第二边缘6均与极耳102抵接。
本申请实施例的技术方案，通过导电块1对电极组件100进行耐压检测，导电块1的第一表面2压合电极组件100的极耳102，当过渡面3和第一表面2均为平面时，过渡面3与第一表面2的夹角为钝角。在第一表面2压合极耳102时，过渡面3与第一表面2的夹角为钝角，降低了导电块1与极耳102抵接时对应的角度过小导致应力集中损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池110的可靠性。
请参照图4至图5。在一些实施例中，第一表面2和过渡面3均为平面，第一表面2与过渡面3之间的角度为α1，满足：110°≤α1≤150°。
在一些实施例中，第一表面2和过渡面3可以均为平面，第一表面2与过渡面3之间的角度为α1。在压合过程中，第一表面2和过渡面3均沿第二方向Y延伸，且第一表面2沿水平方向设置。以第一表面2和过渡面3的延伸方向为观察方向，其中，图5的视角方向与该观察方向相同。在该观察方向上，第一表面2和过渡面3为两条相连的直线，两条直线之间的夹角为α1。
在一些实施例中，α1满足110°≤α1≤150°。例如，α1可以为110°、112°、114°、116°、118°、120°、122°、124°、126°、128°、130°、132°、134°、136°、138°、140°、142°、144°、146°、148°、150°等。
在一些实施例中，α1可以为135°。
在一些实施例中，角度α1的测量方式可以为将量角器贴合于同时与第一表面2和过渡面3连接的表面，以此测量第一表面2和过渡面3之间的夹角α1。
本申请实施例的技术方案，第一表面2和过渡面3均为平面，第一表面2和过渡面3之间的角度α1满足110°≤α1≤150°。当α1≥110°时，降低了导电块1与极耳102抵接的第一边缘5对应的角度过小导致应力集中损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。当α1≤150°时，降低了导电块1与极耳102抵接的第二边缘6对应的角度过小导致应力集中损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。
请参照图6至图7。在一些实施例中，第一表面2为平面，过渡面3为弧面，过渡面3与第一表面2相切。
在一些实施例中，第一表面2可以为平面，过渡面3可以为弧面，过渡面3与第一表面2可以相切。当过渡面3与第一表面2相切时，第一表面2和过渡面3的连接处更加平滑，第一边缘5存在角度上的转变的概率较小，在压合的过程中，使得第一边缘5对应的折痕深度减小。
在一些实施例中，第一表面2可以为平面，过渡面3可以为弧面，过渡面3与第一表面2可以不相切，也即第一表面2和过渡面3的连接处，类似于第一表面2和过渡面3均为平面时，第一表面2与过渡面3的连接处，第一边缘5存在角度上的转变。
本申请实施例的技术方案，当第一表面2为平面且过渡面3为弧面时，过渡面3与第一表面2相切，使得导电块1压合极耳102时，第一边缘5与极耳102抵接更加平滑，降低了导电块1的第一边缘5与极耳102抵接导致极耳102损坏的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。
请参照图4至图9。在一些实施例中，导电块1还包括第一表面2和第二表面4，第一表面2、过渡面3和第二表面4沿导电块1的周向依次设置，第一表面2与过渡面3相交于第一边缘5，过渡面3与第二表面4相交于第二边缘6；其中，第一边缘5和第二边缘6限定的第一参考平面7，过渡面3为凸出于第一参考平面7的弧面。
在一些实施例中，两个表面的相交处为边缘，第一边缘5为过渡面3和第一表面2的相连处，第二边缘6为过渡面3和第二表面4的相连处。需要说明的是，边缘不一定为两个面转角处的边，比如，请参照图6至图7，当过渡面3为弧面，过渡面3与第一表面2连接且相切时，存在转角的概率较小，第一边缘5仅为过渡面3与第一表面2的相连处。
在一些实施例中，第一表面2、过渡面3和第二表面4为导电块1的周向表面，可以沿第二方向Y延伸。图中，第二方向可以用Y表示。
请参照图6至图7。在一些实施例中，第一表面2可以为平面，过渡面3可以为弧面。第一边缘5为过渡面3和第一表面2的相连处，第二边缘6为过渡面3和第二表面4的相连处，也即第一边缘5与第二边缘6为过渡面3的两端，第一边缘5与第二边缘6限定处第一参考平面7，也即第一边缘5和第二边缘6均位于第一参考平面7上，第一参考平面7为假想的虚拟平面。第一参考平面7与第一表面2之间的角度为钝角，过渡面3为凸出于第一参考平面7的弧面，也即，在压合过程中，第一表面2沿水平方向设置时，过渡面3为弧面，整体延伸趋势沿靠近电极组件100的主体101的方向斜向上，使得第一边缘5和第二边缘6均与极耳102抵接。
在一些实施例中，第一表面2可以为平面，过渡面3可以为弧面。当过渡面3为弧面时，过渡面3全部或者部分与极耳102抵接，使得导电块1压合极耳102时的压力分散于更大的接触面积，降低了导电块1压合极耳102时只有一个边缘与极耳102抵接导致应力集中从而损坏极耳102的风险，以及导电块1与极耳102抵接的第一边缘5对应的角度过小导致应力集中损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。
在一些实施例中，第一参考平面7与第一表面2所成的角度为钝角。
本申请实施例的技术方案，通过导电块1对电极组件100进行耐压检测，导电块1的第一表面2压合电极组件100的极耳102，第一表面2通过第一边缘5与过渡面3相连，第二表面4通过第二边缘6与过渡面3相连。且当过渡面3为平面时，过渡面3与第一表面2的夹角为钝角；当过渡面3为弧面时，第一边缘5和第二边缘6限 定出的第一参考平面7与第一表面2的夹角为钝角。在第一表面2压合极耳102时，第一边缘5和第二边缘6可以与极耳102抵接，且第一参考平面7与第一表面2的夹角为钝角，降低了导电块1压合极耳102时只有一个边缘与极耳102抵接导致应力集中从而损坏极耳102的风险，以及导电块1与极耳102抵接的第一边缘5对应的角度过小导致应力集中损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。
请参照图6至图7。在一些实施例中，第一参考平面7与第一表面2之间的角度为α2，满足：110°≤α2≤150°。
在一些实施例中，第一表面2可以为平面，过渡面3可以为弧面，过渡面3的第一边缘5和第二边缘6限定出第一参考平面7，第一表面2与第一参考平面7之间的角度为α1。在压合过程中，第一表面2和第一参考平面7均沿第二方向Y延伸，且第一表面2沿水平方向设置。以第一表面2和第二参考平面8的延伸方向为观察方向，其中，图7的视角方向与该观察方向相同。在该观察方向上，第一表面2和第一参考平面7为两条相连的直线，两条直线之间的夹角为α2。
在一些实施例中，α2满足110°≤α2≤150°。例如，α2可以为110°、112°、114°、116°、118°、120°、122°、124°、126°、128°、130°、132°、134°、136°、138°、140°、142°、144°、146°、148°、150°等。
在一些实施例中，α2可以为135°。
在一些实施例中，角度α2的测量方式可以为将量角器贴合于同时与第一表面2和过渡面3连接的表面，并在该表面上绘制连接第一边缘5和第二边缘6的直线，以此测量第一表面2和该直线之间的夹角，测量出的夹角大小即为第一表面2和第一参考平面7之间的夹角α2。
本申请实施例的技术方案，第一表面2为平面，过渡面3为弧面，第一表面2和第一参考平面7之间的角度α2满足110°≤α2≤150°。当α2≥110°时，降低了导电块1与极耳102抵接的第一边缘5对应的角度过小导致应力集中损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。当α2≤150°时，降低了导电块1与极耳102抵接的第二边缘6对应的角度过小导致应力集中损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。
请参照图8。在一些实施例中，第一表面2和第二表面4均可以为平面。过渡面3包括多个子表面19，多个子表面19限定出过渡面3，第一边缘5和第二边缘6限定出第一参考平面7，第一表面2和第一参考平面7之间的夹角可以为钝角，第二表面4与第一参考平面7之间的夹角可以为钝角。多个子表面19均为平面，最靠近第一表面2的子表面19与第一表面2之间的夹角为钝角，最靠近第二表面4的子表面19与第二表面4之间的夹角为钝角，任意相邻两个子表面19之间的夹角为钝角。其中，每两个相邻子表面19的连接处均可以与极耳102抵接。
请参照图6至图7。在一些实施例中，第二表面4为平面，过渡面3为弧面，过渡面3与第二表面4相切。
在一些实施例中，第二表面4可以为平面，过渡面3可以为弧面，过渡面3与第二表面4可以相切。当过渡面3与第二表面4相切时，第二表面4和过渡面3的连接处更加平滑，第二边缘6存在角度上的转变的概率较小，在压合的过程中，使得第二边缘6对应的折痕深度减小。
在一些实施例中，第二表面4可以为平面，过渡面3可以为弧面，过渡面3与第二表面4可以不相切，也即第二表面4和过渡面3的连接处，类似于第二表面4和过渡面3均为平面时，第二表面4与过渡面3的连接处，第二边缘6存在角度上的转变。
本申请实施例的技术方案，当第二表面4为平面且过渡面3为弧面时，过渡面3与第二表面4相切，使得导电块1压合极耳102时，第二边缘6与极耳102抵接更加平滑，降低了导电块1的第二边缘6与极耳102抵接导致极耳102损坏的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。
在一些实施例中，第一表面2的延长面与第二表面4的延长面相交。
请参照图7。在一些实施例中，第一表面2的延长面可以与第二表面4的延长面相交。第一表面2的延长面，也即第一表面2由第一边缘5延伸的延长面；第二表面4的延长面，也即第二表面4由第二边缘6延伸的延长面。两个延长面相交，即当第一表面2和过渡面3沿第二方向Y延伸时，第一表面2和第二表面4不平行，第一表面2的延长面和过渡面3的延长面相交于第一参考线18，第一参考线18为假想的虚拟线。
在压合过程中，以第一表面2和第二表面4的延伸方向为观察方向，其中，图7的视角方向与该观察方向相同。在该观察方向上，第一表面2的延长面和第二表面4的延长面为两条相交的直线。
请参照图9。在一些实施例中，第一表面2的延长面与第二表面4的延长面可以不相交，此时第一表面2和第二表面4互相平行。
请参照图7。在一些实施例中，第一表面2的延长面与第二表面4的延长面正交。
请参照图7。在一些实施例中，第一表面2的延长面与第二表面4的延长面可以正交，也即，在压合过程中，第一表面2沿水平方向设置，第二表面4沿竖直方向设置。以第一表面2和第二表面4的延伸方向为观察方向，其中，图7的视角方向与该观察方向相同。在该观察方向上，第一表面2的延长面和第二表面4的延长面为两条相互垂直的直线。
请参照图6至图7。在一些实施例中，第一表面2为平面，过渡面3为弧面，第二参考平面8与第一参考平面7平行，且第二参考平面8与过渡面3相切，第一参考平面7与第二参考平面8之间的距离为d1，第一表面2的延长面与第二表面4的延长面相交于第一参考线18，第一参考线18与第一参考平面7平行，且第一参考线18与第一参考平面7之间的距离为d2，满足：0.3d2≤d1≤0.7d2。
在一些实施例中，第一表面2可以为平面，过渡面3可以为弧面。其中，存在第二参考平面8与过渡面3相切，且第二参考平面8与第一参考平面7平行。第一参考平面7和第二参考平面8均为假想的虚拟平面。第一参考平面7与第二参考平面8之间的距离为d1。其中，第一表面2和过渡面3沿第二方向Y延伸，以此形成的第一参考线18和第一参考平面7平行，且第一参考线18与第一参考平面7之间的距离为d2，满足：0.3d2≤d1≤0.7d2。
在一些实施例中，测量d1和d2的方式可以为，在同时与第一表面2和过渡面3连接的表面，绘制连接第一边缘5和第二边缘6的直线，取一块平板与过渡面3相切且与该直线平行，测量该平板与该直线之间的距离，即为d1的大小。再取两个平板分别与第一表面2和第二表面4贴合，且两个平板相交，测量与过渡面3相切的平板与两个平板相交位置的距离，即为d2的大小。
本申请实施例的技术方案，第一表面2为平面，过渡面3为弧面，第一参考平面7与第二参考平面8之间的距离为d1，第一参考线18与第一参考平面7之间的距离为d2，满足0.3d2≤d1≤0.7d2。当d1≥0.3d2时，能够增大过渡面3与极耳102的接触面积，降低了导电块1的第二边缘6与极耳102抵接导致极耳102损坏的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。当d1≤0.7d2时，能够降低过渡面3凸出于第一参考平面7的部分过多从而导致损坏极耳102的风险，也能降低过渡面3凸出于第一参考平面7的部分过多从而导致第二边缘6与极耳102不抵接进而导致第一边缘5与极耳102抵接应力集中损坏极耳102的风险。
请参照图4至图7。在一些实施例中，导电块1具有与第二表面4相连的第三表面9，第三表面9与第一表面2平行且第一表面2和第三表面9之间的距离为d3，满足：0＜d3≤50mm。
在一些实施例中，导电块1具有第三表面9，第三表面9与第二表面4相连且第三表面9与第一表面2平行。在压合极耳102的过程中，第一表面2可以沿水平方向设置，第二表面4可以沿竖直方向设置，第三表面9可以沿水平方向设置，第一表面2和第三表面9之间的距离为d3，也即压合极耳102时，导电块1的高度。
在一些实施例中，在压合极耳102的过程中，第一表面2可以沿水平方向设置，第三表面9可以沿水平方向设置，第二表面4可以沿远离电极组件100的主体101的方向斜向上设置。
在一些实施例中，第一表面2和第三表面9之间的距离为d3，满足：0＜d3≤50mm。例如，d3可以为：5mm、10mm、15mm、20mm、25mm、30mm、35mm、40mm、45mm、50mm等。
在一些实施例中，测量第一表面2和第三表面9之间的距离为d3的方式可以为，选择卡尺的两端卡住第一表面2和第三表面9，其测量出的竖直即为第一表面2和第三表面9之间的距离为d3。
本申请实施例的技术方案，第三表面9与第二表面4相连且第三表面9与第二表面4平行，第一表面2与第三表面9之间的距离d3满足0＜d3≤50mm。在对电极组件100进行耐压检测时，可以通过压板夹持电极组件100的主体101的两端之后，通过导电块1对极耳102进行压合，当d3≤50mm时，能够降低导电块1因为尺寸过大导致与压板干涉的风险，提高了导电块1压合极耳102的便利性。
在一些实施例中，10mm≤d3≤20mm。
在一些实施例中，第一表面2和第三表面9之间的距离为d3，满足：10mm≤d3≤20mm。例如，d3可以为：10mm、11mm、12mm、13mm、14mm、15mm、16mm、17mm、18mm、19mm、20mm等。
本申请实施例的技术方案，第一表面2与第三表面9之间的距离d3满足10mm≤d3≤20mm。当d3≥10mm时，导电块1具有一定的厚度，便于压合极耳102，提高了操作的便利性。当d3≤20mm时，能够更好地降低导电块1因为尺寸过大导致与压板干涉的风险，提高了导电块1压合极耳102的便利性。
请参照图9。在一些实施例中，第一表面2与第二表面4平行，第一表面2和第二表面4之间的距离为d4，满足：0＜d4≤50mm。
在一些实施例中，第二表面4与过渡面3相连，且第二表面4与第一表面2平行。在压合极耳102的过程中，第一表面2可以沿水平方向设置，第二表面4也可以沿水平方向设置，第一表面2和第二表面4之间的距离为d4，也即压合极耳102时，导电块1的高度。
在一些实施例中，第一表面2和第二表面4之间的距离为d4，满足：0＜d4≤50mm。例如，d4可以为：5mm、10mm、15mm、20mm、25mm、30mm、35mm、40mm、45mm、50mm等。
在一些实施例中，测量第一表面2和第二表面4之间的距离为d4的方式可以为，选择卡尺的两端卡住 第一表面2和第二表面4，其测量出的竖直即为第一表面2和第三表面9之间的距离为d4。
本申请实施例的技术方案，第一表面2与第二表面4平行，第一表面2与第二表面4之间的距离d4满足0＜d4≤50mm。在对电极组件100进行耐压检测时，可以通过压板夹持电极组件100的主体101的两端之后，通过导电块1对极耳102进行压合，当d4≤50mm时，能够降低导电块1因为尺寸过大导致与压板干涉的风险，提高了导电块1压合极耳102的便利性。
在一些实施例中，10mm≤d4≤20mm。
在一些实施例中，第一表面2和第二表面4之间的距离为d4，满足：10mm≤d4≤20mm。例如，d4可以为：10mm、11mm、12mm、13mm、14mm、15mm、16mm、17mm、18mm、19mm、20mm等。
本申请实施例的技术方案，第一表面2与第二表面4之间的距离d4满足10mm≤d4≤20mm。当d4≥10mm时，导电块1具有一定的厚度，便于压合极耳102，提高了操作的便利性。当d4≤20mm时，能够更好地降低导电块1因为尺寸过大导致与压板干涉的风险，提高了导电块1压合极耳102的便利性。
请参照图4至图5。在一些实施例中，第一表面2、过渡面3和第二表面4均可以为平面。第一表面2和过渡面3之间的夹角可以为钝角。在压合过程中，第一表面2可以沿水平方向设置，过渡面3可以为沿靠近电极组件100的主体101的方向斜向上设置，第二表面4可以沿竖直方向设置。导电块1还具有第三表面9、第四表面16和两个相对设置的第五表面17，第三表面9的一端与第二表面4相连，且第三表面9可以与第一表面2平行。第四表面16的一端与第三表面9远离弟弟三表面的一端相连，第四表面16可以沿竖直方向设置，第四表面16与第二表面4平行，第四表面16的另一端与第一表面2远离过渡面3的一端相连。其中，第一表面2、过渡面3、第二表面4、第三表面9和第四表面16均沿第二方向Y延伸，在该延伸方向上，第一表面2、过渡面3、第二表面4、第三表面9和第四表面16围设于两个相对设置的第五表面17。
请参照图6至图7。在一些实施例中，第一表面2、和第二表面4均可以为平面，过渡面3可以为弧面。过渡面3的第一边缘5和第二边缘6限定出第一参考平面7，第一表面2和第一参考平面7之间的夹角可以为钝角。在压合过程中，第一表面2可以沿水平方向设置，过渡面3可以为凸出于第一参考平面7，呈沿靠近电极组件100的主体101的方向斜向上的趋势设置，第二表面4可以沿竖直方向设置。导电块1还具有第三表面9、第四表面16、两个第五表面17，第三表面9的一端与第二表面4相连，且第三表面9可以与第一表面2平行。第四表面16的一端与第三表面9远离弟弟三表面的一端相连，第四表面16可以沿竖直方向设置，第四表面16与第二表面4平行，第四表面16的另一端与第一表面2远离过渡面3的一端相连。其中，第一表面2、过渡面3、第二表面4、第三表面9和第四表面16均沿第二方向Y延伸，在该延伸方向上，第一表面2、过渡面3、第二表面4、第三表面9和第四表面16围设于两个第五表面17，两个第五表面17平行。
本申请实施例的技术方案，通过导电块1对电极组件100进行耐压检测，在第一表面2压合极耳102时，第一边缘5和第二边缘6可以与极耳102抵接，且第一表面2与过渡面3的夹角为钝角，或第一参考平面7与第一表面2的夹角为钝角，降低了导电块1压合极耳102时应力集中从而损坏极耳102的风险，同时也降低了压合极耳102时产生的折痕导致极耳102起翘的风险，从而提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。
在一些实施例中，导电块1的加工方式可以为一体成型。
在一些实施例中，导电块1可以为金属材料，例如：可以为铜、铁、镍等。
请参照图10至图11。图10为本申请一些实施例提供的检测机构10的结构示意图，图11为图10中检测机构10另一视角的示意图。需要说明的是，图11中的另一视角为，以第三方向Z为观察方向的视角，其中，第三方向可以用Z表示，第三方向Z可以与第二方向Y两两垂直，第三方向Z可以为垂直于第四表面16的方向。本申请实施例还提供了一种检测机构10，用于电极组件100的耐压测试，检测机构10包括第一方面中任一实施例的导电块1、第一压板11、第二压板12和弹性件13，导电块1用于压合电极组件100的极耳102，第一压板11和第二压板12沿第一方向X间隔设置，第一压板11和第二压板12用于夹持电极组件100的主体101；弹性件13的一端与第一压板11连接，另一端与导电块1连接。
在一些实施例中，在压合极耳102时，可以将第一压板11和第二压板12沿第一方向X间隔设置，导电块1通过弹性件13与第一压板11连接。电极组件100的主体101一端设置于第二压板12上，第一压板11与主体101在第一方向X上的另一端抵接，第一压板11和第二压板12共同夹持主体101。极耳102沿水平方向设置，极耳102可以为多层极耳102，导电块1压合极耳102在第一方向X上靠近第一压板11的部分。
图中，字母X所指示的方向可以为第一方向X。在一些实施例中，第一方向X可以为竖直方向。
在一些实施例中，对电极组件100进行耐压测试时，第一压板11和第二压板12分别夹持电极组件100的主体101在第一方向X上的两个端面，导电块1通过弹性件13的变形，沿第一方向X靠近第二压板12移动，直至完成对极耳102的压合。此时，通过外接导电线，实现导电块1与外接的短路控制机构连接，实现对电极组件100的通电和耐压测试。
在一些实施例中，外接的短路控制机构的原理可以为，当短路控制机构向待检测的电极组件100发出高压信号后，待检测的电极组件100的测试曲线保压段与标准曲线不一致时，判定该电极组件100可能为微短路电极组件100。
在一些实施例中，弹性件13可以为弹簧。
在一些实施例中，弹性件13与第一压板11的连接方式可以为焊接或粘接。弹性件13与导电块1的连接方式可以为焊接或粘接。
本申请实施例的技术方案，检测机构10对电极组件100进行耐压测试，检测机构10包括第一压板11、第二压板12、导电块1和弹性件13，第一压块和第二压块共同夹持电极组件100的主体101，导电块1通过弹性件13与第一压块连接，导电块1压合电极组件100的极耳102。检测机构10对电极组件100进行耐压测试，降低了损坏极耳102的风险，以及导电块1压合极耳102产生的折痕导致极耳102起翘的风险，提高了电极组件100的可靠性，从而提高了电池单体105和电池的可靠性。
请参照图11。在一些实施例中，导电块1构造为两个，两个导电块1分别用于压合电极组件100的正极极耳103和负极极耳104。
在一些实施例中，导电块1的数量可以为两个，分别压合正极极耳103和负极极耳104。本申请实施例以正极极耳103和负极极耳104位于主体101部的同一端为例。
本申请实施例的技术方案，通过两个导电块1分别压合正极极耳103和负极极耳104，同时压合正极极耳103和负极极耳104，提高了检测效率和便利性。
请参照图11。在一些实施例中，两个导电块1之间的距离可调以适配不同尺寸的电极组件100。
在一些实施例中，不同的电极组件100，其主体101在水平方向上的尺寸不同，因此两个导电块1之间的距离需要调整，以提高且操作的便利性。
本申请实施例的技术方案，两个导电块1分别压合正极极耳103和负极极耳104，不同尺寸的电极组件100，正极极耳103与负极极耳104之间的距离不同，通过调节两个导电块1之间的距离，来适配不同尺寸的电极组件100，以压合不同距离的正极极耳103和负极极耳104，提高了检测机构10的实用性和适用性。
请参照图11。在一些实施例中，第一压板11上设置有滑杆14和滑块15，滑块15可滑动地设置在滑杆14上，弹性件13的一端与滑块15连接，另一端与导电块1连接。
在一些实施例中，第一压板11设置有滑杆14，在压合极耳102时，滑杆14可以沿水平方向设置，滑杆14与第一压板11的连接方式可以为焊接。滑块15设置于滑杆14上，滑杆14可以看作是一个沿水平方向延伸的滑道，滑块15可以在滑杆14上相对于滑杆14相对运动，弹性件13的一端与滑块15连接，另一端与导电块1连接，也即，通过移动滑块15，可以实现导电块1在水平方向上的移动。
在一些实施例中，滑块15和滑杆14之间可以设置卡扣，当需要滑块15在滑杆14上固定以固定导电块1在水平方向上的位置时，通过卡扣将滑块15锁死于滑杆14上；当需要滑块15在滑杆14上移动以改变导电块1在水平方向上的位置时，松开卡扣使滑块15能够在滑杆14上相对于滑杆14移动。
本申请实施例的技术方案，通过在第一压板11上设置滑杆14，并将导电块1通过弹性件13连接在滑块15上，滑块15能够在滑杆14上滑动，以实现两个导电块1之间的距离调节，提高了检测机构10的适用性和实用性，且滑杆14和滑块15结构简单，容易获得，也节约了成本。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (21)

  1. 一种导电块，用于压合电极组件的极耳以进行耐压检测，其特征在于，所述导电块包括过渡面，所述过渡面与所述极耳被压合后形成的斜面相匹配。
  2. 根据权利要求1所述的导电块，其特征在于，所述导电块还包括第一表面，所述第一表面用于压合所述极耳，所述过渡面与所述第一表面相邻设置。
  3. 根据权利要求2所述的导电块，其特征在于，所述第一表面和所述过渡面均为平面，所述第一表面与所述过渡面所成的角度为钝角。
  4. 根据权利要求3所述的导电块，其特征在于，所述第一表面与所述过渡面之间的角度为α1，满足：110°≤α1≤150°。
  5. 根据权利要求2所述的导电块，其特征在于，所述第一表面为平面，所述过渡面为弧面。
  6. 根据权利要求5所述的导电块，其特征在于，所述过渡面与所述第一表面相切。
  7. 根据权利要求5至6中任一项所述的导电块，其特征在于，所述导电块还包括第二表面，所述第一表面、所述过渡面和所述第二表面沿所述导电块的周向依次设置，所述第一表面与所述过渡面相交于第一边缘，所述过渡面与所述第二表面连接且相交于第二边缘；
    其中，所述第一边缘和所述第二边缘限定出第一参考平面，所述过渡面为凸出于所述第一参考平面的弧面。
  8. 根据权利要求7所述的导电块，其特征在于，所述第一参考平面与所述第一表面所成的角度为钝角。
  9. 根据权利要求7至8中任一项所述的导电块，其特征在于，所述第一参考平面与所述第一表面之间的角度为α2，满足：110°≤α2≤150°。
  10. 根据权利要求7至9中任一项所述的导电块，其特征在于，所述过渡面与所述第二表面相切。
  11. 根据权利要求7至10中任一项所述的导电块，其特征在于，所述第一表面的延长面与所述第二表面的延长面相交。
  12. 根据权利要求7至11中任一项所述的导电块，其特征在于，所述第一表面的延长面与所述第二表面的延长面正交。
  13. 根据权利要求7至12中任一项所述的导电块，其特征在于，第二参考平面与所述第一参考平面平行，且所述第二参考平面与所述过渡面相切，所述第一参考平面与所述第二参考平面之间的距离为d1，所述第一表面的延长面与所述第二表面的延长面相交于第一参考线，所述第一参考线与所述第一参考平面平行，且所述第一参考线与所述第一参考平面之间的距离为d2，满足：0.3d2≤d1≤0.7d2。
  14. 根据权利要求1至13中任一项所述的导电块，其特征在于，所述导电块具有与第二表面相连的第三表面，所述第三表面与第一表面平行且所述第一表面和所述第三表面之间的距离为d3，满足：0＜d3≤50mm。
  15. 根据权利要求14所述的导电块，其特征在于，10mm≤d3≤20mm。
  16. 根据权利要求1至15中任一项所述的导电块，其特征在于，第一表面与第二表面平行，所述第一表面和所述第二表面之间的距离为d4，满足：0＜d4≤50mm。
  17. 根据权利要求16所述的导电块，其特征在于，10mm≤d4≤20mm。
  18. 一种检测机构，用于电极组件的耐压检测，其特征在于，包括：
    如权利要求1至17中任一项所述的导电块，用于压合所述电极组件的极耳；
    第一压板和第二压板，所述第一压板和所述第二压板沿第一方向间隔设置，所述第一压板和所述第二压板用于夹持所述电极组件的主体；
    弹性件，一端与所述第一压板连接，另一端与所述导电块连接。
  19. 根据权利要求18所述的检测机构，其特征在于，所述导电块构造为两个，两个所述导电块分别用于压合所述电极组件的正极极耳和负极极耳。
  20. 根据权利要求19所述的检测机构，其特征在于，两个所述导电块之间的距离可调以适配不同尺寸的电极组件。
  21. 根据权利要求20所述的检测机构，其特征在于，所述第一压板上设置有滑杆和滑块，所述滑块可滑动地设置在所述滑杆上，所述弹性件的一端与所述滑块连接，另一端与所述导电块连接。
PCT/CN2024/084025 2023-07-04 2024-03-27 导电块及检测机构 Ceased WO2025007598A1 (zh)

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