WO2013029483A1 - 电池连接件和具有该电池连接件的电池组 - Google Patents

电池连接件和具有该电池连接件的电池组 Download PDF

Info

Publication number
WO2013029483A1
WO2013029483A1 PCT/CN2012/080448 CN2012080448W WO2013029483A1 WO 2013029483 A1 WO2013029483 A1 WO 2013029483A1 CN 2012080448 W CN2012080448 W CN 2012080448W WO 2013029483 A1 WO2013029483 A1 WO 2013029483A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
battery connector
metal foils
conductive material
connector according
Prior art date
Application number
PCT/CN2012/080448
Other languages
English (en)
French (fr)
Inventor
朱建华
赖庆
仝志伟
蒋露霞
Original Assignee
深圳市比亚迪汽车研发有限公司
比亚迪股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2011203189498U external-priority patent/CN202217732U/zh
Application filed by 深圳市比亚迪汽车研发有限公司, 比亚迪股份有限公司 filed Critical 深圳市比亚迪汽车研发有限公司
Publication of WO2013029483A1 publication Critical patent/WO2013029483A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/562—Terminals characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/107—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention belongs to the field of batteries, and in particular to a battery connector and a battery pack having the battery connector. Background technique
  • the power battery pack is the power source of the electric vehicle. Due to the harsh environment, the safety performance of the power battery pack is high.
  • the power battery pack is formed by connecting a plurality of single cells. Conventionally, a plurality of unit cells are connected by a connecting piece, and the connection reliability between the unit cells has an influence on the reliability of the power battery pack, so the connection between the unit cells needs to be improved. Summary of the invention
  • the present application is based on the discovery and recognition of the following problems and facts by the inventors:
  • the conventional connecting piece is made of pure copper
  • the positive battery terminal of the single cell is made of pure aluminum
  • the negative battery terminal is made of pure copper. Therefore, at the junction of the single cells, a copper piece (battery connecting piece) is directly connected with the aluminum piece (positive battery terminal), and the contact surface of the copper piece and the aluminum piece is under the action of moisture, carbon dioxide and other impurities in the air.
  • the present invention is directed to solving at least some of the above technical problems or at least providing a useful commercial choice. Accordingly, it is an object of the present invention to provide a battery connector that avoids electrical corrosion, prevents contact resistance from increasing, and improves connection reliability.
  • Another object of the present invention is to provide a battery pack in which the unit cells of the battery pack are connected by the above-mentioned battery connector, the reliability between the unit cells is high, and the life of the battery pack is improved.
  • a battery connector comprising: a first connecting section, the first connecting section being made of a first conductive material; and a second a connecting segment, the second connecting segment is connected to the first connecting segment and the second connecting segment is made of a second conductive material different from the first conductive material.
  • the first connecting section is made of the first conductive material and the second connecting section is made of the second conductive material
  • the first connecting segment may be connected to a first battery terminal of the single cell made of the first conductive material and the second connecting segment to the second cell of the other battery cell a second battery terminal made of a material is connected such that a contact surface of the first connecting segment with the first battery terminal and a contact surface of the second connecting segment and the second battery terminal are not in the air Moisture, dioxane
  • the electrolyte is formed by the action of carbon and other impurities.
  • connection between the first connecting segment and the first battery terminal and the connection between the second connecting segment and the second battery terminal do not form a galvanic cell, thereby avoiding galvanic corrosion and A contact resistance at a junction of the first connection segment and the first battery terminal and a contact resistance at a junction of the second connection segment and the second battery terminal are increased.
  • the first connecting segment and the first battery terminal are both made of the first conductive material and the second connecting segment and the second battery terminal are both made of the second conductive material Therefore, the first connecting segment and the first battery terminal have equal elastic modulus and thermal expansion coefficient, and the second connecting segment and the second battery terminal have equal elastic modulus and thermal expansion coefficient.
  • the first connection segment and the first battery terminal, and the second connection segment and the second battery terminal No gap is created therebetween, thereby avoiding contact resistance at the junction of the first connection segment and the first battery terminal and contact resistance at the junction of the second connection segment and the second battery terminal .
  • the unit cells by connecting the unit cells with the battery connector according to the embodiment of the present invention, it is possible to avoid an increase in temperature at the junction of the battery connector and the unit cell due to an increase in contact resistance, thereby making it more reliable.
  • the adjacent single cells are connected together, and the service life and performance of the battery pack composed of a plurality of the single cells can be improved.
  • the battery connector further includes a protector covering a connection between the first connecting section and the second connecting section.
  • the connecting portion between the first connecting segment and the second connecting segment can be avoided by providing the protecting member covering the connecting portion between the first connecting segment and the second connecting segment Contact with moisture, carbon dioxide and other impurities in the air prevents galvanic corrosion of the connection between the first connecting section and the second connecting section, improves the life of the battery connector, and improves the connection between the cells Reliability.
  • the protective member is a protective layer formed by injection molding, extrusion molding, spraying, or electroplating. Thereby, the protection member is easy to manufacture and the manufacturing cost is low.
  • At least a portion of the first connecting segment is formed by stacking a plurality of first metal foils, each of the first metal foils being made of the first conductive material.
  • Forming at least a portion of the first connecting portion by the plurality of the first metal foils can improve vibration resistance of the battery connector, and can not only connect a plurality of the single cells into a battery pack more easily Moreover, the fault tolerance of the battery pack can be improved.
  • the thickness of the first metal foil is 0. 03 mm -0. 2 mm. Thereby, the vibration resistance of the battery connector can be further improved, and the manufacturing difficulty and manufacturing cost of the first metal foil can be reduced.
  • At least a portion of the second connecting segment is formed by stacking a plurality of second metal foils, each of the second metal foils being made of the second conductive material.
  • Forming at least a portion of the second connecting portion by the plurality of the second metal foils can improve vibration resistance of the battery connector, and can not only connect a plurality of the single cells into a battery pack more easily Moreover, the fault tolerance of the battery pack can be improved. O. 2 ⁇
  • the thickness of the second metal foil is 0. 03 mm-0. 2 mm. Thereby, the vibration resistance of the battery connector can be further improved, and the manufacturing difficulty and manufacturing cost of the first metal foil can be reduced.
  • At least a portion of the first connecting segment is formed by stacking a plurality of first metal foils, each of the first metal foils being made of the first conductive material, the first At least a portion of the two connecting segments are formed by stacking a plurality of second metal foils, each of which is made of the second conductive material.
  • the first connecting section and the second connecting section are connected by one of a lap joint, a butt joint, an insert joint, a single insert joint, a diagonal insert joint, and a fork set joint.
  • the first connecting section and the second connecting section can be more firmly connected together.
  • one of the first conductive material and the second conductive material is copper and the other is aluminum.
  • the battery connector is a strip or strip.
  • the battery connector is easier to manufacture, and the space occupied by the battery connector can be reduced, and the battery pack is easier to assemble.
  • the battery connector is provided with a buffer portion.
  • the buffer portion By providing the buffer portion on the battery connector, the buffer portion can be used to buffer the interaction force between the adjacent single cells, thereby increasing the adjacent cells.
  • the stability of the connection between the batteries not only improves the vibration resistance of the battery pack, but also improves the fault tolerance of the battery pack.
  • the buffer portion is one of an arcuate, horizontally oriented S-shape, a horizontally oriented W-shape, and a corrugated shape.
  • the buffer portion is formed by bending a portion of the battery connector.
  • the buffer portion is plural, and the buffer portion is disposed on each of the first and second connecting segments.
  • connection stability between the adjacent single cells can be further improved, and not only the vibration resistance of the battery pack can be further improved, but also the fault tolerance of the battery pack can be further improved.
  • a portion of the first connecting segment is formed by stacking a plurality of first metal foils, each of the first metal foils being made of the first conductive material
  • the second a portion of the connecting segment is formed by stacking a plurality of second metal foils, each of the second metal foils being made of the second conductive material, the plurality of first metal foils correspondingly corresponding to the plurality of layers Two metal foils are connected
  • the buffer portion is plural and each of the buffer portions is formed by bending a connected first metal foil and a second metal foil.
  • the interaction force between adjacent single cells can be better buffered.
  • the connection stability between adjacent single cells can be further improved, thereby not only further improving the vibration resistance of the battery pack, but also further improving the electricity.
  • the fault tolerance of the pool group is not only further improving the vibration resistance of the battery pack, but also further improving the electricity.
  • a battery pack is provided according to an embodiment of the second aspect of the present invention, the battery pack comprising: a battery connector, the battery connector being the battery connector according to the first aspect of the invention; and a plurality of single cells
  • the unit cell has a first battery terminal and a second battery terminal having polarities opposite to each other, the first battery terminal being made of the first conductive material and the second battery terminal being made of the second conductive Made of a material, wherein a first connecting section of the battery connector between adjacent single cells is connected to a first battery terminal of one of the adjacent cells, and a second connection of the battery connector A segment is connected to a second battery terminal of the other of the adjacent single cells.
  • the battery pack of the embodiment of the invention by connecting the adjacent unit cells with the battery connector according to the first aspect of the invention, the reliability of the connection of the adjacent unit cells is improved, and the battery pack is improved. Service life and performance.
  • the battery pack according to the embodiment of the invention has the advantages of stable structure, stable performance, long service life and the like.
  • FIG. 1 is a schematic view of a battery pack in accordance with an embodiment of the present invention.
  • FIG. 2 is a schematic illustration of a battery connector in accordance with a first embodiment of the present invention
  • FIG. 3 is a schematic illustration of a battery connector in accordance with a second embodiment of the present invention.
  • FIG. 4 is a schematic view of a battery connector in accordance with a third embodiment of the present invention.
  • FIG. 5 is a schematic illustration of a battery connector in accordance with a fourth embodiment of the present invention. . detailed description
  • first,” and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first,”, “second,” may include one or more of the features, either explicitly or implicitly.
  • the meaning of “plurality” is two or more, unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like are to be understood broadly, and may be either a fixed connection or a detachable connection, unless otherwise explicitly stated and defined. , or connected integrally; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • installation can be understood in the present case according to the specific situation.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may include first and second features, unless otherwise explicitly defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "over,”, “above,” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicates that the first feature is higher than the second feature .
  • the first feature under the second feature ",”, “under,” and “below” includes the first feature being directly below and below the second feature, or merely indicating that the first feature level is less than the second feature.
  • the conventional connecting piece is made of pure copper
  • the positive battery terminal of the unit cell is made of pure aluminum
  • the terminal of the negative electrode is made of pure copper. Since the copper piece (battery connecting piece) is directly connected to the aluminum piece (positive battery terminal), the contact surface of the copper piece and the aluminum piece is easily formed into an electrolyte under the action of moisture, carbon dioxide and other impurities in the air, and is electrochemicalized. Corrosion, resulting in increased contact resistance at the junction of the copper and aluminum parts. In addition, after a period of use, a large gap is formed at the joint between the copper member and the aluminum member to affect the contact, further increasing the contact resistance. An increase in contact resistance causes an increase in temperature. Corrosion oxidation is intensified at high temperatures, causing a vicious cycle, which reduces the reliability of the connection. Excessive temperature at the joints can cause smoke and breakage of the connecting piece, which affects the life and performance of the battery pack.
  • a battery pack 10 according to an embodiment of the present invention will be described below with reference to FIG.
  • a battery pack 10 according to an embodiment of the present invention includes a battery connector 100 and a plurality of battery cells 200.
  • the battery connector 100 in accordance with an embodiment of the present invention will first be described with reference to Figs.
  • the battery connector 100 includes a first connecting section 110 and a second connecting section 120.
  • the first connecting section 110 is made of a first conductive material
  • the second connecting section 120 Connected to the first connection segment 110 and the second connection segment 120 is made of a second electrically conductive material different from the first electrically conductive material.
  • the unit battery 200 has a first battery terminal 210 and a second battery terminal 220 whose polarities are opposite to each other.
  • the polarity of the first battery terminal 210 is opposite to the polarity of the second battery terminal 220.
  • the first battery terminal 210 is made of the first conductive material and the second battery terminal 220 is made of the second conductive material, wherein the first connecting section 110 of the battery connector 100 between adjacent single cells 200 Connected to the first battery terminal 210 of one of the adjacent unit cells 200, the second connection section 120 of the battery connector 100 is connected to the second battery terminal 220 of the other of the adjacent unit cells 200.
  • the first connection section 110 of one battery connector 100 is connected to the first battery terminal 210 of one unit battery 200 and the second connection section 120 of the battery connector 100 and the second unit section 200 of the other unit battery 200 Battery terminals 220 are connected to connect the two adjacent single cells 200 in series.
  • the battery pack according to an embodiment of the present invention may further include a single battery connected in parallel with each other.
  • the first connecting section 110 is made of the first conductive material and the second connecting section 120 is made of the second conductive material
  • the first connection segment 110 may be connected to the first battery terminal 210 of the single cell 200 made of the first conductive material and the second connection segment 120 to the second battery cell 200 by the second
  • the second battery terminals 220 made of a conductive material are connected such that the contact surface of the first connecting section 110 with the first battery terminal 210 and the contact surface of the second connecting section 120 and the second battery terminal 220 are not in the air,
  • the electrolyte is formed by the action of carbon dioxide and other impurities.
  • connection between the first connection segment 110 and the first battery terminal 210 and the connection between the second connection segment 120 and the second battery terminal 220 do not form a primary power.
  • the cell thereby avoiding galvanic corrosion, and avoiding the contact resistance at the junction of the first connection segment 110 and the first battery terminal 210 and the contact resistance at the junction of the second connection segment 120 and the second battery terminal 220 are increased.
  • both the first connection segment 110 and the first battery terminal 210 are made of the first conductive material and the second connection segment 120 and the second battery terminal 220 are both made of the second conductive material, the first The elastic modulus and thermal expansion coefficient of the connecting section 110 and the first battery terminal 210 are equal and the elastic modulus and thermal expansion coefficient of the second connecting section 120 and the second battery terminal 220 are equal.
  • the gap prevents the contact resistance at the junction of the first connection segment 110 and the first battery terminal 210 and the contact resistance at the junction of the second connection segment 120 and the second battery terminal 220 from increasing.
  • the unit cells 200 by connecting the unit cells 200 with the battery connector 100 according to the embodiment of the present invention, it is possible to avoid an increase in temperature at the junction of the battery connector 100 and the unit cells 200 due to an increase in contact resistance, thereby making it more reliable.
  • the adjacent single cells 2 QQ are connected together, and the service life and performance of the battery pack 10 composed of a plurality of single cells 2 QQ can be improved.
  • the battery pack 10 of the embodiment of the present invention by connecting the adjacent unit cells 200 with the battery connector 100, the reliability of the connection of the adjacent unit cells 200 is improved, and the service life and performance of the battery pack 10 are improved. .
  • the battery pack 10 according to the embodiment of the present invention has the advantages of stable structure, stable performance, long service life, and the like.
  • the battery connector 100 can be a strip or strip. This not only makes the battery connector 100 easier to manufacture, but also reduces the space occupied by the battery connector 100, making the battery pack 10 easier to assemble.
  • the first connecting section 110 and the second connecting section 120 may be joined by one of a lap joint, a butt joint, a gusset joint, a single insert joint, a diagonal insert joint, and a fork-shaped gusset joint. Thereby, the first connecting section 110 and the second connecting section 120 can be more firmly connected together.
  • the first connecting portion 110 may be formed with a first abutting portion 112
  • the second connecting portion 120 may be formed with a second abutting portion 122 adapted to the first abutting portion 112
  • a connecting section 110 and a second connecting section 120 may be butted together by the first abutting portion 112 and the second abutting portion 122.
  • first conductive material and the second conductive material may be copper
  • the other of the first conductive material and the second conductive material may be aluminum
  • the first conductive material may be aluminum and the second conductive material may be copper
  • the first battery terminal 210 may be a positive battery terminal of the unit battery 200
  • the second battery terminal 220 may be a single battery 200 Negative battery terminal.
  • the battery connector 100 may further include a protector 130 covering a connection between the first connecting segment 110 and the second connecting segment 110. Since the first connecting section 110 and the second connecting section 110 are made of different conductive materials, the connection between the first connecting section 110 and the second connecting section 120 is under the action of moisture, carbon dioxide and other impurities in the air. The electrolyte is easily formed, resulting in galvanic corrosion of the joint between the first connecting section 110 and the second connecting section 120.
  • the protector 130 covering the connection between the first connecting section 110 and the second connecting section 110, the connection between the first connecting section 110 and the second connecting section 120 can be prevented from absorbing moisture in the air, Contacting carbon dioxide with other impurities prevents the connection between the first connecting section 110 and the second connecting section 110
  • the galvanic corrosion improves the life of the battery connector 100 and improves the reliability of the connection between the cells 200.
  • the guard 130 can be a spray coating.
  • the sprayed layer may be made of a non-metallic material such as polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), or the like.
  • PPS polyphenylene sulfide
  • PTFE polytetrafluoroethylene
  • the protector 130 can also be a plated layer.
  • the plating layer may be an electroplated nickel layer or an electroplated silver layer. Therefore, the protector 130 has the advantages of convenient manufacture, low manufacturing cost, and the like.
  • the protective member 130 may also be a protective layer formed by injection molding or extrusion molding.
  • At least a portion of the first connecting segment 110 may be stacked by a plurality of first metal foils 111, and each of the first metal foils 111 may be The first conductive material is made.
  • the vibration resistance of the battery connector 100 can be improved, and not only the plurality of unit cells 200 can be connected to the battery pack 10 more easily, but also The fault tolerance of the battery pack 10 is improved.
  • the thickness of the first metal foil may be 0. 03 mm -0. 2 mm. Since the thickness of each of the first metal foils 111 is not more than 0.2 mm, the first connecting segments 110 having a predetermined thickness may have more layers of the first metal foil 111 (ie, the number of layers of the first metal foil 111) More) in order to further improve the vibration resistance of the battery connector 100. In other words, since the thickness of each of the first metal foils 111 is not more than 0.2 mm, the thickness of the first connecting portion 110 of the first metal foil 111 having a predetermined number of layers can be reduced, thereby making the battery pack 10 more Easy to assemble.
  • the thickness of the first connecting section 110 is too large, the assembly difficulty of the battery pack 10 will increase. Moreover, since the thickness of each of the first metal foils 111 is not less than 0.03 mm, the manufacturing difficulty and the manufacturing cost of the first metal foil 111 can be reduced.
  • the plurality of first metal foils 111 may be located in the middle of the remaining portion of the first connecting portion 110, and may also be located at the first One end of the remainder of the segment 110 is connected.
  • the plurality of first metal foils 111 may be located at one end of the remaining portion of the first connecting section 110, whereby the multilayer first metal foil 111 has only one connection point with the rest of the first connecting section 110. Thereby, the connection difficulty of the multilayer first metal foil 111 with the rest of the first connection section 110 can be reduced and the reliability of the connection can be improved.
  • the plurality of first metal foils 111 and the remaining portions of the first connecting portion 110 may be joined together by welding, such as brazing, laser welding, electron beam welding, or the like.
  • the plurality of first metal foils 111 may be first welded (for example, thermocompression bonding, laser welding, friction welding, etc.) as a whole.
  • the first connecting segment 110 may be formed by stacking a plurality of first metal foils 111, and each of the first metal foils 111 may be made of the first conductive material. production. Thereby, the vibration resistance of the battery connector 100 can be further improved, so that not only the plurality of unit cells 200 can be assembled into the battery pack 10 more easily, but also the fault tolerance of the battery pack 10 can be improved.
  • At least a portion of the second connecting segment 120 may be stacked by a plurality of second metal foils 121, and each of the second metal foils 121 may be Made of a second conductive material. Forming at least a portion of the second connecting portion 120 by the plurality of second metal foils 121 can improve the vibration resistance of the battery connector 100, and can not only connect the plurality of unit cells 200 into the battery pack 10 more easily, but also Improve the capacity of the battery pack 10 Wrong.
  • the thickness of the second metal foil may be 0. 03 mm -0. 2 mm. Since the thickness of each of the second metal foils 121 is not more than 0.2 mm, the second connecting segments 120 having a predetermined thickness may have more layers of the second metal foil 121 (ie, the number of layers of the second metal foil 121) More) in order to further improve the vibration resistance of the battery connector 100. In other words, since the thickness of each of the second metal foils 121 is not more than 0.2 mm, the thickness of the second connecting portion 120 of the second metal foil 121 having a predetermined number of layers can be reduced, thereby making the battery pack 10 more Easy to assemble.
  • the thickness of the second connecting section 120 Due to the limitation of the mounting space, if the thickness of the second connecting section 120 is too large, the assembly difficulty of the battery pack 10 will increase. Moreover, since the thickness of each of the second metal foils 121 is not less than 0.03 mm, the manufacturing difficulty and manufacturing cost of the second metal foils 121 can be reduced.
  • the plurality of second metal foils 121 may be located in the middle of the remaining part of the second connecting section 120, or may be located in the second One end of the remainder of the segment 120 is connected.
  • the plurality of second metal foils 121 may be located at one end of the remaining portion of the second connecting section 120, such that the plurality of second metal foils 121 and the remaining portion of the second connecting section 120 have only one connection point.
  • the plurality of second metal foils 121 and the remaining portions of the second connecting segments 120 may be joined together by soldering, such as brazing, laser welding, electron beam welding, or the like.
  • soldering such as brazing, laser welding, electron beam welding, or the like.
  • the plurality of second metal foils 121 may be first welded (for example, thermocompression bonding, laser welding, friction welding, etc.) as a whole.
  • the connection difficulty of the multilayer second metal foil 121 and the remaining portion of the second connection section 120 can be further reduced and the reliability of the connection can be further improved.
  • the second connecting segment 120 may be formed by stacking a plurality of second metal foils 121, and each of the second metal foils 121 may be made of the second conductive material. production.
  • the vibration resistance of the battery connector 100 can be further improved, so that not only the plurality of unit cells 200 can be assembled into the battery pack 10 more easily, but also the fault tolerance of the battery pack 10 can be improved.
  • At least a portion of the first connecting portion 110 may be formed by stacking a plurality of first metal foils 111, and each of the first metal foils 111 may be made of the first Made of a conductive material, at least a portion of the second connecting portion 120 may be stacked by a plurality of second metal foils 121, and each of the second metal foils 121 may be made of the second conductive material.
  • the vibration resistance of the battery connector 100 can be further improved, so that not only the plurality of unit cells 200 can be assembled into the battery pack 10 more easily, but also the fault tolerance of the battery pack 10 can be improved.
  • the first connecting section 110 may be formed by stacking a plurality of first metal foils 111, each of the first metal foils 111 may be made of the first conductive material, and the second connecting section 120 may be composed of multiple layers.
  • the second metal foils 121 are stacked, and each of the second metal foils 121 may be made of the second conductive material.
  • the battery connector 100 may be provided with a buffer portion 140.
  • the buffer portion 140 By providing the buffer portion 140 on the battery connector 100, the interaction force between the adjacent unit cells 200 (i.e., the unit cells 200 connected through the battery connector 100) can be buffered by the buffer portion 140. This can improve adjacent single cells The connection stability between the pools 200 (i.e., the adjacent unit cells 200 can be more firmly connected together), thereby not only improving the vibration resistance of the battery pack 10, but also improving the fault tolerance of the battery pack 10.
  • the buffer portion 140 can be curved. Thereby, not only can the structure of the battery connector 100 be collapsed (ie, the battery connector 100 has the advantages of a structural tube and the like), but the curved buffer portion 140 can better cushion the space between the adjacent unit cells 200. The interaction force can further improve the connection stability between the adjacent unit cells 200, thereby further improving the vibration resistance of the battery pack 10 and further improving the fault tolerance of the battery pack 10.
  • the buffer portion 140 may be a horizontally oriented arc or a vertically oriented arc.
  • the buffer portion 140 may also be a horizontally oriented S-shaped, horizontally oriented W-shaped or corrugated shape, whereby the buffer portion 140 can better buffer the interaction force between the adjacent unit cells 200, thereby Further, the connection stability between the adjacent unit cells 200 is further improved, and not only the vibration resistance of the battery unit 10 can be further improved, but also the fault tolerance of the battery unit 10 can be further improved.
  • the buffer portion 140 may be through a battery connector.
  • a part of the 100 is bent. Thereby, the structure of the battery connector 100 can be further cylindricalized (i.e., the battery connector 100 has the advantage of being more compact in structure), and the battery connector 100 is easy to manufacture and low in manufacturing cost.
  • the buffer portion 140 may be plural.
  • the interaction force between the adjacent unit cells 200 can be better buffered, whereby the adjacent unit cells 200 can be further improved.
  • the connection stability further improves not only the vibration resistance of the battery pack 10 but also the fault tolerance of the battery pack 10.
  • the first connecting portion 110 may be provided with a buffer portion 140 and the second connecting portion 120 may also be provided with a buffer portion 140.
  • the buffer portion 140 By providing the buffer portion 140 on both the first connecting portion 110 and the second connecting portion 120, the interaction force between the adjacent unit cells 200 can be better buffered, thereby further improving the adjacent ones.
  • the connection stability between the unit cells 200 can further improve not only the vibration resistance of the battery pack 10 but also the fault tolerance of the battery pack 10.
  • a plurality of buffer portions 140 may be provided on the first connecting portion 110 and a plurality of buffer portions 140 may be disposed on the second connecting portion 120.
  • the interaction between the adjacent unit cells 200 can be better buffered. Therefore, the connection stability between the adjacent unit cells 200 can be further improved, and not only the vibration resistance of the battery unit 10 can be further improved, but also the fault tolerance of the battery unit 10 can be further improved.
  • a portion of the first connecting portion 110 may be stacked by a plurality of first metal foils 111, and each of the first metal foils 111 may be made of the first Made of a conductive material, a part of the second connecting portion 120 may be stacked by a plurality of second metal foils 121, and each of the second metal foils 121 may be made of the second conductive material, the first metal of the plurality of layers
  • the foils 111 may be respectively connected to the plurality of second metal foils 121, the buffer portions 140 may be plural, and each of the buffer portions 140 may be connected by a layer of the first metal foil 111 and a layer of the second metal foil 121. Bending is formed.
  • the number of layers of the first metal foil 111 is the same as the number of layers of the second metal foil 121, and one layer of the first metal foil 111 is connected to the second metal foil 121, and a layer of the first metal foil 111 and the first layer
  • the connection portion between the two metal foils 121 may be located on the buffer portion 140. Forming a plurality of buffer portions by bending the plurality of first metal foils 111 and the plurality of second metal foils 121 140, so that the interaction force between the adjacent unit cells 200 can be better buffered, thereby further improving the connection stability between the adjacent unit cells 200, thereby further improving the battery pack 10
  • the anti-vibration performance can further improve the fault tolerance of the battery pack 10.
  • the protective member 130 may also be plural, and one protective member 130 may cover a connection between the first metal foil 111 and the second metal foil 121.
  • a method of assembling a battery pack 10 will be described by taking a first battery terminal 210 of a unit cell 200 as a positive battery terminal and a second battery terminal 220 of the unit battery 200 as a negative battery terminal.
  • the first battery terminal 210 and the first connection section 110 may be made of aluminum
  • the second battery terminal 220 and the second connection section 120 may be made of copper.
  • Terminals 220 are connected.
  • the first connection segment 110 of the other battery connector 100 is then connected to the first battery terminal 210 of the other battery cell 200 and the second connection segment 120 of the other battery connector 100 is connected to the next battery cell 200.
  • the second battery terminals 220 are connected. And so on, until all of the unit cells 200 are connected together by the battery connector 100, the battery pack 10 is obtained.
  • the unit cells 200 By connecting the unit cells 200 with the battery connector 100 according to the embodiment of the present invention, not only the adjacent unit cells 200 can be connected more reliably, but also the battery pack 10 composed of the plurality of unit cells 200 can be improved. Life and performance.

Abstract

一种电池连接件（100）和具有所述电池连接件（100）的电池组（10）。所述电池连接件（100）包括：第一连接段（110），所述第一连接段（110）由第一导电材料制成；和第二连接段（120）与所述第一连接段（110）相连且所述第二连接段（120）有不同于所述第一导电材料的第二材料制成。通过利用根据本发明实施例的电池连接件（100）连接单体电池（200），从而不仅可以更加可靠地将相邻的单体电池（200）连接在一起，而且可以提高由多个单体电池（200）组成的电池组（10）的使用寿命和性能。

Description

电池连接件和具有该电池连接件的电池组
技术领域
本发明属于电池领域， 尤其涉及一种电池连接件和具有该电池连接件的电池组。 背景技术
动力电池组是电动汽车的动力源， 由于使用环境恶劣， 因此对动力电池组的安全性能的 要求较高。 动力电池组由多个单体电池连接而成。 传统上， 多个单体电池之间采用连接片的 方式连接， 单体电池之间的连接可靠性对于动力电池组的可靠性存在影响， 因此单体电池之 间的连接有待改进。 发明内容
本申请是基于发明人对以下问题和事实的发现和认识提出的： 传统的连接片由纯铜制 成， 单体电池的正极电池端子由纯铝制成， 负极电池端子由纯铜制成， 因此， 在单体电池连 接处就出现了铜件（电池连接片）与铝件（正极电池端子）直接连接， 铜件与铝件的接触面 在空气中的水分、二氧化碳和其他杂质的作用下极易形成电解液， 从而在连接片与电池端子 的连接处形成以铝件为负极、 铜件为正极的原电池， 产生电化腐蚀， 造成铜件与铝件连接处 的接触电阻增大。 另外， 由于铜件和铝件的弹性模量和热膨胀系数相差很大， 在单体电池经 多次通电与断电的冷热循环后， 铜件与铝件之间的连接处产生较大的间隙而影响接触， 进一 步增大了接触电阻。接触电阻增大，会引起温度升高。 高温下腐蚀氧化加剧，产生恶性循环， 使连接可靠性降低， 连接部位的温度过高会导致冒烟、 连接片断裂， 影响电池组的寿命和性 能。
本发明旨在至少在一定程度上解决上述技术问题之一或至少提供一种有用的商业选择。 为此，本发明的一个目的在于提出一种电池连接件，该电池连接件可以避免发生电腐蚀， 防止接触电阻增大， 提高连接可靠性。
本发明的另一个目的在于提出一种电池组，该电池组的单体电池之间通过上述电池连接 件相连， 单体电池之间的可靠性高， 电池组寿命提高。
为了实现上述目的， 根据本发明第一方面的实施例提出一种电池连接件， 所述电池连接 件包括： 第一连接段， 所述第一连接段由第一导电材料制成； 和第二连接段， 所述第二连接 段与所述第一连接段相连且所述第二连接段由不同于所述第一导电材料的第二导电材料制 成。
根据本发明实施例的电池连接件， 由于所述第一连接段由所述第一导电材料制成且所述 第二连接段由所述第二导电材料制成， 在连接单体电池时， 可以将所述第一连接段与一个单 体电池的由所述第一导电材料制成的第一电池端子相连且将所述第二连接段与另一个单体 电池的由所述第二导电材料制成的第二电池端子相连，从而所述第一连接段与所述第一电池 端子的接触面以及所述第二连接段与所述第二电池端子的接触面不会在空气中的水分、二氧 化碳和其他杂质的作用下形成电解液。 因此， 所述第一连接段与所述第一电池端子的连接处 以及所述第二连接段与所述第二电池端子的连接处不会形成原电池， 由此避免产生电化腐 蚀，并且可以避免所述第一连接段与所述第一电池端子的连接处的接触电阻以及所述第二连 接段与所述第二电池端子的连接处的接触电阻增大。
而且， 由于所述第一连接段和所述第一电池端子都由所述第一导电材料制成且所述第二 连接段和所述第二电池端子都由所述第二导电材料制成， 因此所述第一连接段和所述第一电 池端子的弹性模量和热膨胀系数相等且所述第二连接段和所述第二电池端子的弹性模量和 热膨胀系数相等。 这样在所述单体电池经过多次通电与断电的冷热循环后， 所述第一连接段 与所述第一电池端子之间以及所述第二连接段与所述第二电池端子之间都不会产生间隙，从 而避免所述第一连接段与所述第一电池端子的连接处的接触电阻以及所述第二连接段与所 述第二电池端子的连接处的接触电阻增大。
因此， 利用根据本发明实施例的电池连接件连接单体电池， 可以避免因接触电阻增大 而导致所述电池连接件与所述单体电池的连接处的温度升高，从而不仅可以更加可靠地将相 邻的所述单体电池连接在一起 ,而且可以提高由多个所述单体电池组成的所述电池组的使用 寿命和性能。
在本发明的一个实施例中，所述电池连接件还包括包覆所述第一连接段和第二连接段之 间的连接部的保护件。
通过设置包覆所述第一连接段和所述第二连接段之间的连接部的所述保护件，可以使所 述第一连接段和所述第二连接段之间的连接部避免与空气中的水分、二氧化碳和其他杂质接 触， 防止所述第一连接段和所述第二连接段之间的连接部产生电化腐蚀， 提高了电池连接件 的寿命， 提高了单体电池之间连接的可靠性。
在本发明的一个实施例中， 所述保护件为通过注塑、 挤塑、 喷涂或电镀形成的保护层。 由此， 保护件制造方便、 制造成本低。
在本发明的一个实施例中， 所述第一连接段的至少一部分由多层第一金属箔叠置而成， 每层所述第一金属箔均由所述第一导电材料制成。
通过多层所述第一金属箔形成所述第一连接段的至少一部分，可以提高所述电池连接件 的抗振性能， 而且不仅可以更加容易地将多个所述单体电池连接成电池组， 而且可以改善所 述电池组的容错性。
在本发明的一个实施例中， 每层所述第一金属箔的厚度均为 0. 03毫米 -0. 2毫米。 由此 可以进一步提高所述电池连接件的抗振性能，并且降低所述第一金属箔的制造难度和制造成 本。
在本发明的一个实施例中， 所述第二连接段的至少一部分由多层第二金属箔叠置而成， 每层第二金属箔均由所述第二导电材料制成。
通过多层所述第二金属箔形成所述第二连接段的至少一部分，可以提高所述电池连接件 的抗振性能， 而且不仅可以更加容易地将多个所述单体电池连接成电池组， 而且可以改善所 述电池组的容错性。 在本发明的一个实施例中， 每层所述第二金属箔的厚度均为 0. 03毫米 -0. 2毫米。 由此 可以进一步提高所述电池连接件的抗振性能，并且降低所述第一金属箔的制造难度和制造成 本。
在本发明的一个实施例中， 所述第一连接段的至少一部分由多层第一金属箔叠置而成， 每层第一金属箔均由所述第一导电材料制成，所述第二连接段的至少一部分由多层第二金属 箔叠置而成， 每层第二金属箔均由所述第二导电材料制成。
在本发明的一个实施例中， 所述第一连接段和第二连接段通过搭接、 对接、 镶榫接合、 单嵌接合、斜嵌接合和叉形镶榫接合之一相连。 由此可以将所述第一连接段和所述第二连接 段更加牢固地连接在一起。
在本发明的一个实施例中，所述第一导电材料和所述第二导电材料中的一个为铜而另一 个为铝。
在本发明的一个实施例中， 所述电池连接件为条状板或条状片。 由此， 电池连接件更加 容易制造， 而且可以减小所述电池连接件占用的空间， 所述电池组更加容易组装。
在本发明的一个实施例中， 所述电池连接件上设有緩冲部。
通过在所述电池连接件上设置所述緩冲部，可以利用所述緩冲部緩冲相邻的所述单体电 池之间的相互作用力， 由此可以提高相邻的所述单体电池之间的连接稳定性， 进而不仅可以 提高所述电池组的抗振性能， 而且可以提高所述电池组的容错性。
在本发明的一个实施例中， 所述緩冲部为弧形、 水平定向的 S形、 水平定向的 W形和波 紋形中的一种。 由此不仅可以筒化所述电池连接件的结构， 而且弧形的所述緩冲部可以更好 地緩冲相邻的所述单体电池之间的相互作用力，从而可以进一步提高相邻的所述单体电池之 间的连接稳定性， 进而不仅可以进一步提高所述电池组的抗振性能， 而且可以进一步提高所 述电池组的容错性。
在本发明的一个实施例中， 所述緩冲部是通过将所述电池连接件的一部分折弯形成。 由 此不仅可以进一步筒化所述电池连接件的结构， 便于制造且制造成本低。
在本发明的一个实施例中， 所述緩冲部为多个， 所述第一和第二连接段上均设有所述緩 冲部。
由此可以进一步提高相邻的所述单体电池之间的连接稳定性，进而不仅可以进一步提高 所述电池组的抗振性能， 而且可以进一步提高所述电池组的容错性。
在本发明的一个实施例中， 所述第一连接段的一部分由多层第一金属箔叠置而成， 每层 第一金属箔均由所述第一导电材料制成，所述第二连接段的一部分由多层第二金属箔叠置而 成， 每层第二金属箔均由所述第二导电材料制成， 所述多层第一金属箔分别对应地与所述多 层第二金属箔相连，所述緩冲部为多个且每个所述緩冲部由相连的一层第一金属箔和一层第 二金属箔折弯形成。
通过将所述多层第一金属箔和所述多层第二金属箔折弯形成多个所述緩冲部，从而可以 更好地緩冲相邻的单体电池之间的相互作用力，由此可以进一步提高相邻的单体电池之间的 连接稳定性， 进而不仅可以进一步提高所述电池组的抗振性能， 而且可以进一步提高所述电 池组的容错性。
根据本发明第二方面的实施例提出一种电池组， 所述电池组包括： 电池连接件， 所述电 池连接件为根据本发明第一方面所述的电池连接件； 和多个单体电池， 所述单体电池具有极 性彼此相反的第一电池端子和第二电池端子，所述第一电池端子由所述第一导电材料制成且 所述第二电池端子由所述第二导电材料制成，其中相邻单体电池之间的所述电池连接件的第 一连接段与所述相邻单体电池中的一个的第一电池端子相连，所述电池连接件的第二连接段 与所述相邻单体电池中的另一个的第二电池端子相连。
根据本发明实施例的电池组，通过用根据本发明第一方面所述的电池连接件将相邻的单 体电池连接， 提高了相邻的单体电池连接的可靠性， 提高了电池组的使用寿命和性能。 根据 本发明实施例的电池组具有结构稳定、 性能稳定、 使用寿命长等优点。
本发明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， 或通过本发明的实践了解到。 附图说明
图 1是根据本发明实施例的电池组的示意图；
图 2是根据本发明第一实施例的电池连接件的示意图；
图 3是根据本发明第二实施例的电池连接件的示意图；
图 4是根据本发明第三实施例的电池连接件的示意图； 和
图 5是根据本发明第四实施例的电池连接件的示意图。。 具体实施方式
下面通过参考附图描述的实施例是示例性的， 旨在用于解释本发明， 而不能理解为对本 发明的限制。
在本发明的描述中， 需要理解的是， 术语 "中心"、 "纵向"、 "横向"、 "长度"、 "宽度"、 "厚度"、 "上，，、 "下，，、 "前，，、 "后，，、 "左，，、 "右，，、 "竖直"、 "水平"、 "顶，，、 "底" "内，，、 "外"、 "顺时针"、 "逆时针" 等指示的方位或位置关系为基于附图所示的方位或位置关系， 仅是为了便于描述本发明和筒化描述，而不是指示或暗示所指的装置或元件必须具有特定的 方位、 以特定的方位构造和操作， 因此不能理解为对本发明的限制。
此外， 术语 "第一，，、 "第二，， 仅用于描述目的， 而不能理解为指示或暗示相对重要性或 者隐含指明所指示的技术特征的数量。 由此， 限定有 "第一，，、 "第二，， 的特征可以明示或者 隐含地包括一个或者更多个该特征。在本发明的描述中， "多个"的含义是两个或两个以上， 除非另有明确具体的限定。
在本发明中， 除非另有明确的规定和限定， 术语 "安装"、 "相连"、 "连接"、 "固定" 等 术语应做广义理解， 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 机械连接， 也可以是电连接； 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发 明中的具体含义。
在本发明中， 除非另有明确的规定和限定， 第一特征在第二特征之 "上" 或之 "下" 可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过 它们之间的另外的特征接触。 而且， 第一特征在第二特征 "之上，，、 "上方，， 和 "上面" 包括第一特征在第二特征正上方和斜上方， 或仅仅表示第一特征水平高度高于第二特 征。 第一特征在第二特征 "之下，， 、 "下方，， 和 "下面" 包括第一特征在第二特征正下 方和斜下方， 或仅仅表示第一特征水平高度小于第二特征。
本申请的发明人经过深入地研究后发现并认识到： 传统的连接片由纯铜制成， 单体电池 的正极电池端子由纯铝制成， 负极电池端子由纯铜制成。 由于铜件（电池连接片）与铝件（正 极电池端子）直接连接， 因此铜件与铝件的接触面在空气中的水分、 二氧化碳和其他杂质的 作用下极易形成电解液， 并产生电化腐蚀， 造成铜件与铝件连接处的接触电阻增大。 另夕卜， 在使用一段时间后， 铜件与铝件之间的连接处产生较大的间隙而影响接触， 进一步增大了接 触电阻。 接触电阻增大， 会引起温度升高。 高温下腐蚀氧化加剧， 产生恶性循环， 使连接可 靠性降低， 连接部位的温度过高会导致冒烟、 连接片断裂， 影响电池组的寿命和性能。
下面参照图 1描述根据本发明实施例的电池组 10。如图 1所示，根据本发明实施例的电 池组 10包括电池连接件 100和多个单体电池 200。
首先参照图 1-图 4描述根据本发明实施例的电池连接件 100。如图 1-图 4所示，根据本 发明实施例的电池连接件 100包括第一连接段 110和第二连接段 120 , 第一连接段 110由第 一导电材料制成，第二连接段 120与第一连接段 110相连且第二连接段 120由不同于所述第 一导电材料的第二导电材料制成。
单体电池 200具有极性彼此相反的第一电池端子 210和第二电池端子 220。 换言之， 第 一电池端子 210的极性与第二电池端子 220的极性相反。第一电池端子 210由所述第一导电 材料制成且第二电池端子 220由所述第二导电材料制成，其中相邻单体电池 200之间的电池 连接件 100的第一连接段 110与相邻单体电池 200中的一个的第一电池端子 210相连，该电 池连接件 100的第二连接段 120与相邻单体电池 200中的另一个的第二电池端子 220相连。
也就是说，一个电池连接件 100的第一连接段 110与一个单体电池 200的第一电池端子 210相连且该电池连接件 100的第二连接段 120与另一个单体电池 200的第二电池端子 220 相连以便使这两个相邻的单体电池 200串联。 然而， 可以理解的是， 根据本发明实施例的电 池组还可以包括彼此并联的单体电池。
根据本发明实施例的电池连接件 100 , 由于第一连接段 110由所述第一导电材料制成且 第二连接段 120由所述第二导电材料制成， 在连接单体电池 200时， 可以将第一连接段 110 与一个单体电池 200 的由所述第一导电材料制成的第一电池端子 210相连且将第二连接段 120与另一个单体电池 200的由所述第二导电材料制成的第二电池端子 220相连， 从而第一 连接段 110与第一电池端子 210的接触面以及第二连接段 120与第二电池端子 220的接触面 不会在空气中的水分、 二氧化碳和其他杂质的作用下形成电解液。 因此， 第一连接段 110与 第一电池端子 210的连接处以及第二连接段 120与第二电池端子 220的连接处不会形成原电 池， 由此避免产生电化腐蚀， 并且可以避免第一连接段 110与第一电池端子 210的连接处的 接触电阻以及第二连接段 120与第二电池端子 220的连接处的接触电阻增大。
而且， 由于第一连接段 110和第一电池端子 210都由所述第一导电材料制成且第二连接 段 120和第二电池端子 220都由所述第二导电材料制成， 因此第一连接段 110和第一电池端 子 210的弹性模量和热膨胀系数相等且第二连接段 120和第二电池端子 220的弹性模量和热 膨胀系数相等。 这样在单体电池 200经过多次通电与断电的冷热循环后， 第一连接段 110与 第一电池端子 210之间以及第二连接段 120与第二电池端子 220之间都不会产生间隙，从而 避免第一连接段 110与第一电池端子 210的连接处的接触电阻以及第二连接段 120与第二电 池端子 220的连接处的接触电阻增大。
因此， 利用根据本发明实施例的电池连接件 100连接单体电池 200 , 可以避免因接触 电阻增大而导致电池连接件 100与单体电池 200的连接处的温度升高，从而不仅可以更加可 靠地将相邻的单体电池 2 QQ连接在一起， 而且可以提高由多个单体电池 2 QQ组成的电池组 10的使用寿命和性能。
根据本发明实施例的电池组 10 ,通过用电池连接件 100将相邻的单体电池 200连接，提 高了相邻的单体电池 200连接的可靠性， 提高了电池组 10的使用寿命和性能。 根据本发明 实施例的电池组 10具有结构稳定、 性能稳定、 使用寿命长等优点。
如图 1和图 1所示， 电池连接件 100可以是条状板或条状片。 由此不仅可以使电池连接 件 100更加容易制造， 而且可以减小电池连接件 100占用的空间， 可以使电池组 10更加容 易组装。
第一连接段 110和第二连接段 120可以通过搭接、 对接、 镶榫接合、 单嵌接合、 斜嵌接 合和叉形镶榫接合之一相连。由此可以将第一连接段 110和第二连接段 120更加牢固地连接 在一起。 具体地， 如图 1所示， 第一连接段 110上可以形成有第一对接部 112 , 第二连接段 120上可以形成有与第一对接部 112适配的第二对接部 122 , 其中第一连接段 110和第二连 接段 120可以通过第一对接部 112和第二对接部 122对接在一起。
可选地， 所述第一导电材料和所述第二导电材料中的一个可以是铜， 所述第一导电材料 和所述第二导电材料中的另一个可以是铝。 具体地， 所述第一导电材料可以是铝且所述第二 导电材料可以是铜，第一电池端子 210可以是单体电池 200的正极电池端子且第二电池端子 220可以是单体电池 200的负极电池端子。 可以理解的是， 在本发明实施例的描述中， 术语 "铝" 包括纯铝和铝合金， 术语 "铜" 包括纯铜和铜合金。
如图 1-图 4所示，在本发明的一些实施例中， 电池连接件 100还可以包括包覆第一连接 段 110和第二连接段 110之间的连接部的保护件 130。由于第一连接段 110和第二连接段 110 由不同的导电材料制成， 因此第一连接段 110和第二连接段 120之间的连接部在空气中的水 分、 二氧化碳和其他杂质的作用下容易形成电解液， 从而导致第一连接段 110和第二连接段 120之间的连接部产生电化腐蚀。 通过设置包覆第一连接段 110和第二连接段 110之间的连 接部的保护件 130 , 可以使第一连接段 110和第二连接段 120之间的连接部避免与空气中的 水分、 二氧化碳和其他杂质接触， 防止第一连接段 110和第二连接段 110之间的连接部产生 电化腐蚀， 提高了电池连接件 100的寿命， 提高了单体电池 200之间连接的可靠性。
有利地， 保护件 130可以是喷涂层。 所述喷涂层可以由非金属材料制成， 例如聚苯硫醚 ( PPS )、 聚四氟乙烯（PTFE )等。 保护件 130还可以是电镀层。 所述电镀层可以是电镀镍层 或电镀银层。 由此保护件 130具有制造方便、 制造成本低等优点。 保护件 130还可以是通过 注塑或挤塑形成的保护层。
如图 3和图 4所示， 在本发明的一些实施例中， 第一连接段 110的至少一部分可以由多 层第一金属箔 111叠置而成， 每层第一金属箔 111都可以由所述第一导电材料制成。 通过多 层第一金属箔 111形成第一连接段 110的至少一部分，可以提高电池连接件 100的抗振性能， 而且不仅可以更加容易地将多个单体电池 200连接成电池组 10 , 而且可以改善电池组 10的 容错性。
有利地， 每层第一金属箔 111的厚度都可以是 0. 03毫米 -0. 2毫米。 由于每层第一金属 箔 111的厚度都不大于 0. 2毫米，因此可以使具有预定厚度的第一连接段 110具有更多层的 第一金属箔 111 (即第一金属箔 111的层数更多）以便进一步提高电池连接件 100的抗振性 能。 换言之， 由于每层第一金属箔 111的厚度不大于 0. 2毫米， 因此可以减小具有预定层数 的第一金属箔 111的第一连接段 110的厚度， 由此可以使电池组 10更加容易装配。 由于装 配空间的限制， 如果第一连接段 110的厚度太大， 将会增加电池组 10的装配难度。 而且， 由于每层第一金属箔 111的厚度都不小于 0. 03毫米， 因此可以降低第一金属箔 111的制造 难度和制造成本。
具体地， 当第一连接段 110的一部分由多层第一金属箔 111叠置而成时， 多层第一金属 箔 111可以位于第一连接段 110的其余部分的中部，还可以位于第一连接段 110的其余部分 的一端。 可选地， 多层第一金属箔 111可以位于第一连接段 110的其余部分的一端， 由此多 层第一金属箔 111与第一连接段 110的其余部分只有一个连接点 （处）， 从而可以降低多层 第一金属箔 111与第一连接段 110的其余部分的连接难度且可以提高连接的可靠性。
可选地， 多层第一金属箔 111与第一连接段 110的其余部分可以通过焊接的方式连接在 一起， 例如钎焊、 激光焊、 电子束焊等。 其中， 在多层第一金属箔 111与第一连接段 110的 其余部分连接之前， 可以先将多层第一金属箔 111焊接（例如热压焊、 激光焊、 摩擦焊等） 为一个整体，由此可以进一步降低多层第一金属箔 111与第一连接段 110的其余部分的连接 难度且可以进一步提高连接的可靠性。
如图 3所示， 在本发明的一个实施例中， 第一连接段 110可以由多层第一金属箔 111叠 置而成， 每层第一金属箔 111都可以由所述第一导电材料制成。 由此可以进一步提高电池连 接件 100的抗振性能， 从而不仅可以更加容易地将多个单体电池 200组装成电池组 10 , 而 且可以改善电池组 10的容错性。
如图 2-图 4所示，在本发明的一些示例中，第二连接段 120的至少一部分可以由多层第 二金属箔 121叠置而成， 每层第二金属箔 121都可以由所述第二导电材料制成。 通过多层第 二金属箔 121形成第二连接段 120的至少一部分， 可以提高电池连接件 100的抗振性能， 而 且不仅可以更加容易地将多个单体电池 200连接成电池组 10 , 而且可以改善电池组 10的容 错性。
有利地， 每层第二金属箔 121的厚度都可以是 0. 03毫米 -0. 2毫米。 由于每层第二金属 箔 121的厚度都不大于 0. 2毫米，因此可以使具有预定厚度的第二连接段 120具有更多层的 第二金属箔 121 (即第二金属箔 121的层数更多）以便进一步提高电池连接件 100的抗振性 能。 换言之， 由于每层第二金属箔 121的厚度不大于 0. 2毫米， 因此可以减小具有预定层数 的第二金属箔 121的第二连接段 120的厚度， 由此可以使电池组 10更加容易装配。 由于装 配空间的限制， 如果第二连接段 120的厚度太大， 将会增加电池组 10的装配难度。 而且， 由于每层第二金属箔 121的厚度都不小于 0. 03毫米， 因此可以降低第二金属箔 121的制造 难度和制造成本。
具体地， 当第二连接段 120的一部分由多层第二金属箔 121叠置而成时， 多层第二金属 箔 121可以位于第二连接段 120的其余部分的中部，也可以位于第二连接段 120的其余部分 的一端。 可选地， 多层第二金属箔 121可以位于第二连接段 120的其余部分的一端， 由此多 层第二金属箔 121与第二连接段 120的其余部分只有一个连接点 （处）， 从而可以降低多层 第二金属箔 121与第二连接段 120的其余部分的连接难度且可以提高连接的可靠性。
可选地， 多层第二金属箔 121与第二连接段 120的其余部分可以通过焊接的方式连接在 一起， 例如钎焊、 激光焊、 电子束焊等。 其中， 在多层第二金属箔 121与第二连接段 120的 其余部分连接之前， 可以先将多层第二金属箔 121焊接（例如热压焊、 激光焊、 摩擦焊等） 为一个整体，由此可以进一步降低多层第二金属箔 121与第二连接段 120的其余部分的连接 难度且可以进一步提高连接的可靠性。
如图 3所示， 在本发明的一个实施例中， 第二连接段 120可以由多层第二金属箔 121叠 置而成， 每层第二金属箔 121都可以由所述第二导电材料制成。 由此可以进一步提高电池连 接件 100的抗振性能， 从而不仅可以更加容易地将多个单体电池 200组装成电池组 10 , 而 且可以改善电池组 10的容错性。
在本发明的一个具体示例中， 如图 3所示， 第一连接段 110的至少一部分可以由多层第 一金属箔 111叠置而成， 每层第一金属箔 111都可以由所述第一导电材料制成， 第二连接段 120的至少一部分可以由多层第二金属箔 121叠置而成， 每层第二金属箔 121都可以由所述 第二导电材料制成。 由此可以进一步提高电池连接件 100的抗振性能， 从而不仅可以更加容 易地将多个单体电池 200组装成电池组 10 , 而且可以改善电池组 10的容错性。
有利地， 第一连接段 110可以由多层第一金属箔 111叠置而成， 每层第一金属箔 111可 以由所述第一导电材料制成， 且第二连接段 120可以由多层第二金属箔 121叠置而成， 每层 第二金属箔 121可以由所述第二导电材料制成。由此可以进一步提高电池连接件 100的抗振 性能， 从而不仅可以更加容易地将多个单体电池 200组装成电池组 10 , 而且可以改善电池 组 10的容错性。
如图 1-图 4所示， 在本发明的一些实施例中， 电池连接件 100上可以设有緩冲部 140。 通过在电池连接件 100上设置緩冲部 140 ,可以利用緩冲部 140緩冲相邻的单体电池 200(即 通过电池连接件 100相连的单体电池 200 )之间的相互作用力， 由此可以提高相邻的单体电 池 200之间的连接稳定性（即可以使相邻的单体电池 200更加稳固地连接在一起）， 进而不 仅可以提高电池组 10的抗振性能， 而且可以提高电池组 10的容错性。
有利地， 緩冲部 140可以是弧形。 由此不仅可以筒化电池连接件 100的结构（即电池连 接件 100具有结构筒单等优点），而且弧形的緩冲部 140可以更好地緩冲相邻的单体电池 200 之间的相互作用力， 从而可以进一步提高相邻的单体电池 200之间的连接稳定性， 进而不仅 可以进一步提高电池组 10的抗振性能， 而且可以进一步提高电池组 10的容错性。 具体地， 緩冲部 140可以是水平定向的弧形， 也可以是竖直定向的弧形。
緩冲部 140还可以是水平定向的 S形、 水平定向的 W形或波紋形， 由此緩冲部 140可以 更好地緩冲相邻的单体电池 200 之间的相互作用力， 从而可以进一步提高相邻的单体电池 200之间的连接稳定性， 进而不仅可以进一步提高电池组 10的抗振性能， 而且可以进一步 提高电池组 10的容错性。
如图 1-图 4所示， 在本发明的一个具体示例中， 緩冲部 140可以是通过将电池连接件
100的一部分折弯形成。 由此可以进一步筒化电池连接件 100的结构 （即电池连接件 100具 有结构更加筒单等优点）， 电池连接件 100便于制造且制造成本低。
可选地， 緩冲部 140可以是多个。 通过在电池连接件 100上设置多个緩冲部 140 , 从而 可以更好地緩冲相邻的单体电池 200之间的相互作用力，由此可以进一步提高相邻的单体电 池 200之间的连接稳定性， 进而不仅可以进一步提高电池组 10的抗振性能， 而且可以进一 步提高电池组 10的容错性。
如图 3和图 4所示， 在本发明的一些实施例中， 第一连接段 110上可以设有緩冲部 140 且第二连接段 120上也可以设有緩冲部 140。 通过在第一连接段 110和第二连接段 120上都 设置緩冲部 140 , 从而可以更好地緩冲相邻的单体电池 200之间的相互作用力， 由此可以进 一步提高相邻的单体电池 200之间的连接稳定性， 进而不仅可以进一步提高电池组 10的抗 振性能， 而且可以进一步提高电池组 10的容错性。
有利地，第一连接段 110上可以设有多个緩冲部 140且第二连接段 120上也可以设有多 个緩冲部 140。 通过在第一连接段 110上设置多个緩冲部 140且在第二连接段 110上设置多 个緩冲部 140 , 从而可以更好地緩冲相邻的单体电池 200之间的相互作用力， 由此可以进一 步提高相邻的单体电池 200之间的连接稳定性， 进而不仅可以进一步提高电池组 10的抗振 性能， 而且可以进一步提高电池组 10的容错性。
如图 5所示, 在本发明的一个具体示例中， 第一连接段 110的一部分可以由多层第一金 属箔 111叠置而成， 每层第一金属箔 111都可以由所述第一导电材料制成， 第二连接段 120 的一部分可以由多层第二金属箔 121叠置而成，每层第二金属箔 121都可以由所述第二导电 材料制成， 多层第一金属箔 111可以分别对应地与多层第二金属箔 121相连， 緩冲部 140可 以是多个且每个緩冲部 140可以由相连的一层第一金属箔 111和一层第二金属箔 121折弯形 成。 换言之， 第一金属箔 111的层数与第二金属箔 121的层数相同， 且一层第一金属箔 111 与一层第二金属箔 121相连，一层第一金属箔 111和一层第二金属箔 121之间的连接部可以 位于緩冲部 140上。通过将多层第一金属箔 111和多层第二金属箔 121折弯形成多个緩冲部 140 , 从而可以更好地緩冲相邻的单体电池 200之间的相互作用力， 由此可以进一步提高相 邻的单体电池 200之间的连接稳定性， 进而不仅可以进一步提高电池组 10的抗振性能， 而 且可以进一步提高电池组 10的容错性。 有利地， 保护件 1 30也可以是多个， 且一个保护件 130可以包覆一层第一金属箔 111和一层第二金属箔 121之间的连接部。
下面参照图 1以单体电池 200的第一电池端子 210为正极电池端子且单体电池 200的第 二电池端子 220为负极电池端子为例描述根据本发明实施例的电池组 10的组装方法。 具体 地， 第一电池端子 210和第一连接段 110可以由铝制成， 第二电池端子 220和第二连接段 120可以由铜制成。
先将一个电池连接件 100的第一连接段 110与一个单体电池 200的第一电池端子 210相 连且将该电池连接件 100的第二连接段 120与另一个单体电池 200的第二电池端子 220相连。 然后将另一个电池连接件 100的第一连接段 110与另一个单体电池 200的第一电池端子 210 相连且将该另一个电池连接件 100的第二连接段 120与下一个单体电池 200的第二电池端子 220相连。 依此类推， 直至用电池连接件 100将全部的单体电池 200连接在一起， 得到电池 组 10。
通过利用根据本发明实施例的电池连接件 100连接单体电池 200 , 不仅可以更加可靠 地将相邻的单体电池 200连接在一起， 而且可以提高由多个单体电池 200组成的电池组 10 的使用寿命和性能。
在本说明书的描述中，参考术语"一个实施例"、 "一些实施例"、 "示例"、 "具体示例"、 或 "一些示例" 等的描述意指结合该实施例或示例描述的具体特征、 结构、 导电材料或者特 点包含于本发明的至少一个实施例或示例中。在本说明书中， 对上述术语的示意性表述不一 定指的是相同的实施例或示例。 而且， 描述的具体特征、 结构、 导电材料或者特点可以在任 何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本发明的实施例， 可以理解的是， 上述实施例是示例性的， 不能理解为对本发明的限制，本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下 在本发明的范围内可以对上述实施例进行变化、 修改、 替换和变型。

Claims

1、 一种电池连接件， 其特征在于： 包括：
第一连接段， 所述第一连接段由第一导电材料制成； 和
第二连接段，所述第二连接段与所述第一连接段相连且所述第二连接段由不同于所述第 一导电材料的第二导电材料制成。
2、 根据权利要求 1所述的电池连接件， 其特征在于， 还包括包覆所述第一连接段和第 二连接段之间的连接部的保护件。
3、 根据权利要求 2所述的电池连接件， 其特征在于 所述保护件为通过注塑、 挤塑、 喷涂或电镀形成的保护层。
4、 根据权利要求 1所述的电池连接件， 其特征在于 所述第一连接段的至少一部分由 多层第一金属箔叠置而成， 每层所述第一金属箔均由所述； —导电材料制成。
5、 根据权利要求 4所述的电池连接件， 其特征在于 每层所述第一金属箔的厚度均为 0. 03毫米 -0. 2毫米。
6、 根据权利要求 1所述的电池连接件， 其特征在于 所述第二连接段的至少一部分由 多层第二金属箔叠置而成， 每层第二金属箔均由所述第二-导电材料制成。
7、 根据权利要求 6所述的电池连接件， 其特征在于 每层所述第二金属箔的厚度均为 0. 03毫米 -0. 2毫米。
8、 根据权利要求 1所述的电池连接件， 其特征在于 所述第一连接段的至少一部分由 多层第一金属箔叠置而成， 每层第一金属箔均由所述第一导电材料制成， 所述第二连接段的 至少一部分由多层第二金属箔叠置而成， 每层第二金属箔均由所述第二导电材料制成。
9、 根据权利要求 1所述的电池连接件， 其特征在于， 所述第一连接段和第二连接段通 过搭接、 对接、 镶榫接合、 单嵌接合、 斜嵌接合和叉形镶榫接合之一相连。
10、 根据权利要求 1所述的电池连接件， 其特征在于， 所述第一导电材料和所述第二导 电材料中的一个为铜而另一个为铝。
11、 根据权利要求 1所述的电池连接件， 其特征在于， 所述电池连接件为条状板或条状 片。
12、 根据权利要求 1-11 中任意一项所述的电池连接件， 其特征在于， 所述电池连接件 上设有緩冲部。
1 3、 根据权利要求 12所述的电池连接件， 其特征在于， 所述緩冲部为弧形、 水平定向 的 S形、 水平定向的 W形和波紋形中的一种。
14、 根据权利要求 12所述的电池连接件， 其特征在于， 所述緩冲部是通过将所述电池 连接件的一部分折弯形成。
15、 根据权利要求 12所述的电池连接件， 其特征在于， 所述緩冲部为多个， 所述第一 和第二连接段上均设有所述緩冲部。
16、 根据权利要求 12所述的电池连接件， 其特征在于， 所述第一连接段的一部分由多 层第一金属箔叠置而成， 每层第一金属箔均由所述第一导电材料制成， 所述第二连接段的一 部分由多层第二金属箔叠置而成， 每层第二金属箔均由所述第二导电材料制成， 所述多层第 一金属箔分别对应地与所述多层第二金属箔相连，所述緩冲部为多个且每个所述緩冲部由相 连的一层第一金属箔和一层第二金属箔折弯形成。
17、 一种电池组， 其特征在于： 包括：
电池连接件， 所述电池连接件为根据权利要求 1-16中任一项所述的电池连接件； 和 多个单体电池， 所述单体电池具有极性彼此相反的第一电池端子和第二电池端子，所述 第一电池端子由所述第一导电材料制成且所述第二电池端子由所述第二导电材料制成，其中 相邻单体电池之间的所述电池连接件的第一连接段与所述相邻单体电池中的一个的第一电 池端子相连，所述电池连接件的第二连接段与所述相邻单体电池中的另一个的第二电池端子 相连。
PCT/CN2012/080448 2011-08-29 2012-08-22 电池连接件和具有该电池连接件的电池组 WO2013029483A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN2011203189498U CN202217732U (zh) 2011-08-29 2011-08-29 一种电池连接件及电池组
CN201120318949.8 2011-08-29
CN201110416275 2011-12-14
CN201110416275.X 2011-12-14

Publications (1)

Publication Number Publication Date
WO2013029483A1 true WO2013029483A1 (zh) 2013-03-07

Family

ID=47755311

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/CN2012/080448 WO2013029483A1 (zh) 2011-08-29 2012-08-22 电池连接件和具有该电池连接件的电池组
PCT/CN2012/080449 WO2013029484A1 (zh) 2011-08-29 2012-08-22 电池端子、电池盖板组件、单体电池和电池组

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/080449 WO2013029484A1 (zh) 2011-08-29 2012-08-22 电池端子、电池盖板组件、单体电池和电池组

Country Status (3)

Country Link
US (1) US20140178744A1 (zh)
EP (1) EP2752921B1 (zh)
WO (2) WO2013029483A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9440601B2 (en) 2013-09-06 2016-09-13 Johnson Controls Technology Company System for providing voltage measurements of battery cells to a PCB within a battery module
US10269502B2 (en) * 2015-08-25 2019-04-23 Gs Yuasa International Ltd. Energy storage device including a conductive member penetrating a container and a fixing member covering the conductive member
DE102018209270B4 (de) * 2018-06-11 2022-09-22 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen einer Deckelbaugruppe für ein Zellgehäuse einer prismatischen Batteriezelle einer Hochvoltbatterie eines Kraftfahrzeugs, Batteriezelle sowie Hochvoltbatterie
KR20220054130A (ko) * 2020-10-23 2022-05-02 삼성에스디아이 주식회사 이차 전지
US11621462B2 (en) * 2021-02-12 2023-04-04 GM Global Technology Operations LLC Battery modules with finger-proof electrical terminals for bolted busbar connections

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1284755A (zh) * 1999-08-17 2001-02-21 Gs－美尔可泰克株式会社 电池引线、使用该电池引线的电池组件和组合电池
CN201146250Y (zh) * 2007-12-25 2008-11-05 比亚迪股份有限公司 一种电池模块连接件
CN101820056A (zh) * 2009-02-27 2010-09-01 比亚迪股份有限公司 一种电池系统及使用该电池系统的电动车
WO2010142679A1 (de) * 2009-06-08 2010-12-16 Auto-Kabel Managementgesellschaft Mbh Batteriezellenverbinder

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6844110B2 (en) * 2000-05-24 2005-01-18 Ngk Insulators, Ltd. Lithium secondary cell and assembly thereof
JP2001357834A (ja) * 2000-06-16 2001-12-26 Japan Storage Battery Co Ltd 電 池
JP4711653B2 (ja) * 2004-08-31 2011-06-29 三洋電機株式会社 電池
CN201149879Y (zh) * 2008-02-02 2008-11-12 张祥茂 一种蓄电池端子改良结构
US8263255B2 (en) * 2009-10-01 2012-09-11 Sb Limotive Co., Ltd. Rechargeable battery and battery module
US9196890B2 (en) * 2009-10-05 2015-11-24 Samsung Sdi Co., Ltd. Battery module with welded portion between terminals
FR2955974B1 (fr) * 2010-02-02 2012-04-20 Commissariat Energie Atomique Accumulateur electrochimique avec emballage comprenant au moins une feuille en polyarylethercetone (paek), feuille et procedes de realisation associes
US8673479B2 (en) * 2010-03-30 2014-03-18 Samsung Sdi Co., Ltd. Secondary battery and a secondary battery module
US8956753B2 (en) * 2010-03-30 2015-02-17 Samsung Sdi Co., Ltd. Secondary battery and secondary battery module
JP2012059365A (ja) * 2010-09-03 2012-03-22 Sanyo Electric Co Ltd 密閉電池用端子及びその製造方法
US8309246B2 (en) * 2010-10-25 2012-11-13 Sb Limotive Co., Ltd. Terminal of rechargeable battery and method of manufacturing the same
US20120177978A1 (en) * 2011-01-11 2012-07-12 Sungbae Kim Secondary battery, method of assembling the same, and battery pack including the secondary battery
KR101222286B1 (ko) * 2011-01-13 2013-01-15 로베르트 보쉬 게엠베하 이차전지
KR101222376B1 (ko) * 2011-01-14 2013-01-15 로베르트 보쉬 게엠베하 이차전지
KR101274859B1 (ko) * 2011-03-04 2013-06-13 로베르트 보쉬 게엠베하 이차 전지 및 그 조립 방법
KR101265213B1 (ko) * 2011-06-30 2013-05-27 로베르트 보쉬 게엠베하 실링 구조를 가지는 이차 전지
KR101724007B1 (ko) * 2011-11-15 2017-04-07 삼성에스디아이 주식회사 이차 전지

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1284755A (zh) * 1999-08-17 2001-02-21 Gs－美尔可泰克株式会社 电池引线、使用该电池引线的电池组件和组合电池
CN201146250Y (zh) * 2007-12-25 2008-11-05 比亚迪股份有限公司 一种电池模块连接件
CN101820056A (zh) * 2009-02-27 2010-09-01 比亚迪股份有限公司 一种电池系统及使用该电池系统的电动车
WO2010142679A1 (de) * 2009-06-08 2010-12-16 Auto-Kabel Managementgesellschaft Mbh Batteriezellenverbinder

Also Published As

Publication number Publication date
EP2752921A1 (en) 2014-07-09
US20140178744A1 (en) 2014-06-26
EP2752921B1 (en) 2019-10-02
WO2013029484A1 (zh) 2013-03-07
EP2752921A4 (en) 2015-03-04

Similar Documents

Publication Publication Date Title
JP5275271B2 (ja) ２次電池
JP5606851B2 (ja) 電池及び電池モジュール
KR101297288B1 (ko) 단일 전지 및 이를 포함하는 동력 배터리 팩
JP6038802B2 (ja) 組電池及びこの組電池に使用するための角形二次電池
WO2022051915A1 (zh) 电极组件、电化学装置及电子装置
US20110129706A1 (en) Lithium-Ion Secondary Battery
JP7296208B2 (ja) 二次電池及び組電池
JP2010212241A (ja) ２次電池
WO2013029483A1 (zh) 电池连接件和具有该电池连接件的电池组
JP2019153440A (ja) 二次電池及びそれを用いた組電池
CN105830255B (zh) 方形二次电池
JP5296105B2 (ja) 電極端子接続部材及び絶縁性接合部材を有する中または大型バッテリーモジュール
US20110274964A1 (en) Battery Tabs and Method of Making the Same
CN103165844B (zh) 电池连接件和具有该电池连接件的电池组
JP2008204988A (ja) キャパシタユニット、およびその製造方法
JP5207283B2 (ja) 組電池および電池パック
KR101652653B1 (ko) 전지 모듈 및 조전지
JP2011204439A (ja) 組電池、抵抗溶接方法および組電池の製造方法
US10964923B2 (en) Prismatic secondary battery, and assembled battery and vehicle including the same
JP4956937B2 (ja) 鉛蓄電池
JP5286628B2 (ja) 電池
JP6984408B2 (ja) 蓄電素子の製造方法、及び、蓄電素子
KR101310441B1 (ko) 전기화학 커패시터
CN219759899U (zh) 电池
CN219436089U (zh) 圆柱电池

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12827280

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12827280

Country of ref document: EP

Kind code of ref document: A1