WO2024103931A1 - 电池及电子设备 - Google Patents

电池及电子设备 Download PDF

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Publication number
WO2024103931A1
WO2024103931A1 PCT/CN2023/117838 CN2023117838W WO2024103931A1 WO 2024103931 A1 WO2024103931 A1 WO 2024103931A1 CN 2023117838 W CN2023117838 W CN 2023117838W WO 2024103931 A1 WO2024103931 A1 WO 2024103931A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulating member
shell
battery
battery according
notch
Prior art date
Application number
PCT/CN2023/117838
Other languages
English (en)
French (fr)
Inventor
林泳涛
熊家庚
谢继春
Original Assignee
珠海冠宇电池股份有限公司
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
Application filed by 珠海冠宇电池股份有限公司 filed Critical 珠海冠宇电池股份有限公司
Publication of WO2024103931A1 publication Critical patent/WO2024103931A1/zh

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Classifications

    • 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
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • 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 invention relates to the field of new energy, and in particular to a battery and electronic equipment.
  • a battery is a device that converts chemical energy into electrical energy. It is widely used in life. With the development of the battery industry, the requirements for battery performance are becoming higher and higher.
  • Existing batteries generally include a battery cell, a shell, an insulating member and a pole, wherein the battery cell is arranged in the shell, the shell is used to protect the battery cell, the pole extends from the outside of the shell into the shell and is electrically connected to the pole ear of the battery cell to extend the electrical properties of the battery cell to the outside of the shell for easy use, and the insulating member is arranged on the inner and outer sides of the shell and between the shell and the pole.
  • the present invention provides a battery and an electronic device, which improve the battery capacity density.
  • the present invention provides the following technical solutions:
  • the present invention provides a battery, comprising a battery cell, a shell, an insulating member and an adapter, wherein the shell has a accommodating cavity in which the battery cell is arranged; a notch is provided on a side wall of the shell, the insulating member is installed at the notch, and the insulating member has a mounting hole; the adapter is provided on the insulating member, the adapter has a protrusion, the protrusion passes through the mounting hole and extends to the inside of the shell, and the protrusion is electrically connected to the pole ear assembly of the battery cell.
  • the insulating member has a mounting groove on one side away from the housing.
  • the hole is located at the bottom of the installation groove, the adapter piece is arranged in the installation groove, and the adapter piece covers the installation hole.
  • the shape of the insulating member matches the shape of the notch, and the insulating member is snap-fitted into the notch.
  • two opposite side edges of the insulating member are provided with sliding grooves, and the insulating member is clamped in the notch through the sliding grooves.
  • the thickness of the middle region of the insulating member is smaller than the thickness of the edge of the insulating member where the slide groove is provided.
  • a welding area is formed between the top of the adapter plate and the groove wall of the installation groove, and the adapter plate and the insulating member are welded together in the welding area.
  • the top surface of the adapter does not exceed the top surface of the insulating member.
  • the tab assembly includes a tab, and the bottom of the protrusion abuts against the surface of the tab.
  • the pole tab assembly includes a pole tab and an overcurrent protection element, and the overcurrent protection element is connected between the pole tab and the protrusion.
  • the battery cell is covered with a packaging shell, and the tabs of the battery cell extend out of the packaging shell.
  • the pole ear is arranged on the battery cell
  • the packaging shell includes a main body and a sealing edge extending outward from one side edge of the main body
  • the packaging shell has an opening on the side facing the pole ear, and the sealing edge is bent toward the main body; the pole ear extends out of the packaging shell from the opening along the bending direction of the sealing edge.
  • it further includes a heat dissipation layer, which is arranged between adjacent walls of the packaging shell and the outer shell.
  • the outer shell is a metal shell
  • the insulating component is a plastic component
  • the battery cell is a roll-type or stacked structure.
  • the shape of the notch is a rectangle.
  • the housing is formed by combining two shell parts.
  • the shape of the mounting hole is circular or rectangular.
  • the mounting hole is opened at the geometric center of the insulating member.
  • the heat dissipation layer is a heat dissipation glue.
  • the present invention further provides an electronic device, comprising any one of the batteries in the first aspect.
  • the battery provided by the present invention comprises a battery cell, a shell, an insulating member and a transfer plate, wherein the shell has a receiving cavity, and the battery cell is arranged in the receiving cavity; a notch is provided on the side wall of the shell, the insulating member is installed at the notch, and the insulating member has a mounting hole; the transfer plate is arranged on the insulating member, and the transfer plate has a protrusion, the protrusion passes through the mounting hole and extends to the inside of the shell, and the protrusion is electrically connected to the pole ear assembly of the battery cell.
  • the battery provided by the present invention is provided with a notch on the side wall of the shell, and the insulating member is directly installed at the notch, so that the insulating member in the present invention can not only serve as a part of the shell, play a role of protection and support, but also play a role of isolating the transfer plate from the shell, and then a mounting hole is provided on the insulating member, and the transfer plate is arranged on the insulating member, so that the transfer plate has a protrusion, and the protrusion passes through the mounting hole and extends to the inside of the shell, and the protrusion is electrically connected to the pole ear assembly.
  • the insulating member and the transfer plate will occupy a small part of the internal space of the shell, leaving more space for the arrangement of the battery cell, so as to improve the capacity density of the battery without changing the overall size of the battery.
  • FIG1 is a schematic diagram of the overall structure of a battery provided by an embodiment of the present invention.
  • FIG2 is an exploded view of FIG1 ;
  • FIG3 is a side view of FIG1 ;
  • Fig. 4 is a cross-sectional view of the A-A position in Fig. 3;
  • FIG5 is an enlarged view of point B in FIG4;
  • FIG6 is a schematic diagram of the overall structure of an insulating member in a battery according to an embodiment of the present invention.
  • Fig. 7 is a side view of 6
  • FIG8 is a schematic diagram of an adapter sheet in a battery according to an embodiment of the present invention.
  • FIG. 9 is a side view of FIG. 8 .
  • the terms “installed”, “set”, “provided with”, “connected”, and “connected” should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Or it may be the internal connection between two devices, elements or components.
  • installed can be a fixed connection, a detachable connection, or an integral structure
  • it can be a mechanical connection or an electrical connection
  • it can be directly connected or indirectly connected through an intermediate medium.
  • it may be the internal connection between two devices, elements or components.
  • first means two or more.
  • Existing batteries generally include a cell, a shell, an insulating member, and a pole, wherein the cell is disposed in the shell, the shell is used to protect the cell, the pole extends from the outside of the shell into the shell and is electrically connected to the pole lug of the cell, so as to extend the electrical properties of the cell to the outside of the shell for easy use, and the insulating member is disposed on the inside and outside of the shell and between the shell and the pole.
  • the existing pole, insulating member, etc. themselves will occupy a large space, resulting in a decrease in the volume of the cell inside the shell and a decrease in the battery capacity density.
  • the present invention provides a battery, which includes a battery cell, a shell, an insulating member and a transfer plate, wherein the shell has a receiving cavity, and the battery cell is arranged in the receiving cavity; the side wall of the shell has a notch, the insulating member is installed at the notch, and the insulating member has a mounting hole; the transfer plate is arranged on the insulating member, and the transfer plate has a protrusion, the protrusion passes through the mounting hole and extends to the inside of the shell, and the protrusion is electrically connected to the pole ear assembly of the battery cell.
  • the battery provided by the present invention is provided with a notch on the side wall of the shell, and the insulating member is directly installed at the notch, so that the insulating member in the present invention can not only serve as a part of the shell, play a role of protection and support, but also play a role of isolating the transfer plate from the shell, and then the mounting hole is provided on the insulating member, and the transfer plate is arranged on the insulating member, so that the transfer plate has a protrusion, and the protrusion passes through the mounting hole and extends to the inside of the shell, and the protrusion is electrically connected to the pole ear assembly.
  • the insulating member and the transfer plate will occupy a small part of the internal space of the shell, leaving more space for the arrangement of the battery cell, so as to improve the capacity density of the battery without changing the overall size of the battery.
  • Figure 1 is a schematic diagram of the overall structure of a battery provided in an embodiment of the present invention
  • Figure 2 is an exploded view of Figure 1
  • Figure 3 is a side view of Figure 1
  • Figure 4 is a cross-sectional view at AA in Figure 3
  • Figure 5 is an enlarged view at B in Figure 4
  • Figure 6 is a schematic diagram of the overall structure of an insulating member in a battery provided in an embodiment of the present invention
  • Figure 7 is a side view of Figure 6
  • Figure 8 is a schematic diagram of a transition piece in a battery provided in an embodiment of the present invention
  • Figure 9 is a side view of Figure 8.
  • an embodiment of the present invention provides a battery 100, which includes a battery cell 110, a housing 120, an insulating member 130, and a transition piece 140, the shell 120 has a accommodating cavity, and the battery cell 110 is arranged in the accommodating cavity; the side wall of the shell 120 has a notch 121, the insulating member 130 is installed at the notch 121, and the insulating member 130 has a mounting hole 131; the adapter plate 140 is arranged on the insulating member 130, and the adapter plate 140 has a protrusion 141, the protrusion 141 passes through the mounting hole 131 and extends to the inside of the shell 120, and the protrusion 141 is electrically connected to the pole ear assembly 111 of the battery cell 110.
  • the battery cell 110 includes a negative electrode made of a negative electrode material, a positive electrode made of a positive electrode material, and a separator separating the positive and negative electrodes.
  • the battery cell 110 may be arranged in a winding type, a stacked type, etc., which is not specifically limited in this embodiment.
  • the role of the shell 120 is to protect the battery cell 110.
  • the shell 120 can be made of two parts for easy installation.
  • the material of the shell 120 can be stainless steel, aluminum alloy and other materials, which are strong and corrosion-resistant.
  • the shell 120 can also be made of other materials, which is not specifically limited in this embodiment.
  • the outer shell 120 can be a metal shell, and the specific material of the insulating part 130 can be resin, plastic, etc.
  • the main function of the insulating part 130 is to isolate the outer shell 120 and the adapter 140 to prevent the two from electrical contact.
  • the insulating part 130 is arranged at the notch 121 to replace the original part of the outer shell 120 at the notch 121.
  • the size and shape of the insulating part 130 can be adapted to the size and shape of the notch 121. Specifically, the shape of the notch 121 can be opened into a rectangle.
  • the adapter 140 is generally made of a material with good conductive properties, such as copper, aluminum, etc.
  • the protrusion 141 on the adapter 140 can be processed in advance by stamping technology, and then the adapter 140 is installed on the mounting hole 131 on the insulating member 130 during assembly. Alternatively, the adapter 140 can be first covered on the mounting hole 131, and then the protrusion 141 is punched out on the adapter 140. This processing method can ensure the close combination of the protrusion 141 and the mounting hole 131 on the one hand, and can also facilitate the control of the length of the protrusion 141 on the other hand.
  • the mounting hole 131 can generally be opened at the geometric center of the insulating member 130 , so that the distance between the edge of the adapter plate 140 and the edge of the insulating member 130 can be kept relatively uniform as much as possible to ensure the insulation effect of the insulating member 130 .
  • the battery 100 provided in the embodiment of the present invention has a notch 121 formed on the side wall of the housing 120, and the insulating member 130 is directly installed at the notch 121.
  • the insulating member 130 in the embodiment of the present invention can not only serve as a part of the housing 120 to protect and support it, but also can isolate the adapter 140 from the housing 120.
  • a mounting hole 131 is formed on the insulating member 130 to
  • the adapter 140 is arranged on the insulating member 130, so that the adapter 140 has a protrusion 141, and the protrusion 141 passes through the mounting hole 131 and extends to the inside of the outer shell 120.
  • the protrusion 141 is electrically connected to the pole ear assembly 111.
  • the insulating member 130 and the adapter 140 will occupy a very small part of the internal space of the outer shell 120, leaving more space for the arrangement of the battery cell 110, thereby improving the capacity density of the battery 100 without changing the overall size of the battery 100.
  • a mounting groove 132 may be provided on a side of the insulating member 130 away from the housing 120, a mounting hole 131 may be provided at the bottom of the mounting groove 132, and the adapter sheet 140 may be provided in the mounting groove 132, and the adapter sheet 140 may cover the mounting hole 131.
  • the depth of the mounting groove 132 may be equal to the thickness of the adapter sheet 140, and the adapter sheet 140 may be provided in the mounting groove 132.
  • the structure of the battery 100 may be made more compact, and the overall stability of the battery 100 may be increased.
  • the adapter sheet 140 may not need to protrude from the surface of the housing 120, and the overall size of the battery 100 may be further reduced.
  • the shape of the insulating member 130 can be matched with the shape of the notch 121 , and the insulating member 130 is snap-fitted at the notch 121 .
  • the insulating member 130 may be provided with a slide groove 133 on both opposite side edges, so that the insulating member 130 is clamped in the notch 121 through the slide groove 133.
  • the housing 120 may be a combined type, in which a notch 121 is provided on the side wall of one part of the housing 120, and the opening of the notch 121 is the place where it is combined with the other part of the housing 120. The insulating member 130 is clamped into the notch 121 from the opening of the notch 121 along the slide groove 133.
  • the part of the housing 120 without the insulating member 130 can be blocked at the opening of the notch 121 to prevent the insulating member 130 from detaching from the notch 121.
  • Designing the insulating member 130 in this way is not only convenient for loading and unloading, but also can be installed more firmly.
  • the thickness of the middle region of the insulating member 130 is less than the thickness of the edge of the insulating member 130 provided with the slide groove 133.
  • the thickness of the portion of the insulating member 130 where the slide groove 133 is provided may be thicker than the thickness of the housing 120 to ensure that the slide groove 133 can be inserted into the edge of the notch 121, and the thickness of the insulating member 130 between the two slide grooves 133 may be equal to the thickness of the housing 120, so that the space occupied by the insulating member 130 can be reduced as much as possible.
  • a welding area may be formed between the top of the adapter plate 140 and the groove wall of the mounting groove 132 , and the adapter plate 140 and the insulating member 130 may be welded together at the welding area.
  • the top surface of the adapter sheet 140 may also be made not to exceed the top surface of the insulating member, so as to reduce the size of the battery 100 as much as possible.
  • the tab assembly 111 may include a tab 1111, and the bottom of the protrusion 141 may abut against the surface of the tab 1111.
  • the tab 1111 may be bent and attached to the surface of the battery cell 110, and the protrusion 141 may directly abut against the surface of the tab 1111 after passing through the mounting hole 131, and then the protrusion 141 and the tab 1111 are welded together. This method has a compact structure and is easy to assemble.
  • the tab assembly 111 includes a tab 1111 and an overcurrent protection element 1112, and the overcurrent protection element 1112 is connected between the tab 1111 and the protrusion.
  • the overcurrent protection element 1112 mainly prevents the battery 100 from being burned due to excessive current during the charging and discharging process of the battery 100.
  • the overcurrent protection element 1112 generally includes a sensor, and the overcurrent protection element 1112 is normally closed. When the sensor detects that the current flowing through the overcurrent protection element 1112 is too high, the normally closed switch of the overcurrent protection element 1112 is opened, that is, the overcurrent protection element 1112 is in a disconnected state, thereby disconnecting the electrical connection between the tab 1111 and the adapter 140. It should be noted that the overcurrent protection element 1112 is generally arranged at the positive tab 1111.
  • the battery cell 110 may be coated with a packaging shell 150 , and the tabs 1111 of the battery cell 110 extend out of the packaging shell 150 .
  • the battery cell 110 is coated with the inner and outer double layers to further prevent leakage of the battery 100 .
  • the pole ear 1111 is arranged on the battery cell 110, and the packaging shell 150 may include a main body and a sealing edge extending outward from one side edge of the main body, and the side of the packaging shell 150 facing the pole ear 1111 has an opening, and the sealing edge is bent in a direction close to the main body; the pole ear 1111 extends out of the packaging shell 150 from the opening along the bending direction of the sealing edge.
  • a heat dissipation layer may be provided between the adjacent walls of the packaging shell 150 and the outer shell 120.
  • the heat dissipation layer may be made of heat dissipation glue, which may be coated on the outer wall of the packaging shell 150 to help the battery cell 110 dissipate heat better.
  • the mounting hole 131 can be set to be circular, and accordingly, the outer shape of the protrusion 141 can also be processed into a circular shape.
  • the circular protrusion 141 has the advantage of being easy to process.
  • the shape of the mounting hole 131 can also be other shapes, such as square, rectangular, etc.
  • the mounting hole 131 is processed into these non-circular shapes to ensure that the protrusion 141 cannot rotate relative to the mounting hole 131 after being installed in the mounting hole 131, thereby further improving the stability of the adapter 140.
  • the battery 100 provided in the embodiment of the present invention includes a battery cell 110, a shell 120, an insulating member 130 and a adapter plate 140.
  • the shell 120 has a accommodating cavity, and the battery cell 110 is arranged in the accommodating cavity; a notch 121 is provided on the side wall of the shell 120, and the insulating member 130 is installed at the notch 121, and the insulating member 130 has a mounting hole 131; the adapter plate 140 is arranged on the insulating member 130, and the adapter plate 140 has a protrusion 141, which passes through the mounting hole 131 and extends to the inside of the shell 120, and the protrusion 141 is electrically connected to the pole ear assembly 111 of the battery cell 110.
  • the battery 100 provided in the embodiment of the present invention has a notch 121 opened on the side wall of the outer shell 120, and the insulating member 130 is directly installed at the notch 121.
  • the insulating member 130 in the embodiment of the present invention can not only serve as a part of the outer shell 120 to play a role of protection and support, but also can play a role of isolating the adapter 140 from the outer shell 120.
  • a mounting hole 131 is opened on the insulating member 130, and the adapter 140 is set on the insulating member 130, so that the adapter 140 has a protrusion 141, and the protrusion 141 passes through the mounting hole 131 and extends to the inside of the outer shell 120.
  • the protrusion 141 is electrically connected to the pole ear assembly 111.
  • the present invention also provides an electronic device, which includes any one of the batteries 100 in the above embodiments, wherein the battery 100 includes a battery cell 110, a shell 120, an insulating member 130 and a adapter plate 140, wherein the shell 120 has a accommodating cavity, and the battery cell 110 is arranged in the accommodating cavity; a notch 121 is provided on the side wall of the shell 120, and the insulating member 130 is installed at the notch 121, and the insulating member 130 has a mounting hole 131; the adapter plate 140 is arranged on the insulating member 130, and the adapter plate 140 has a protrusion 141, which passes through the mounting hole 131 and extends to the inside of the shell 120, and the protrusion 141 is electrically connected to the pole ear assembly 111 of the battery cell 110.
  • the battery 100 includes a battery cell 110, a shell 120, an insulating member 130 and a adapter plate 140, wherein the shell 120 has a accommodating cavity, and the battery cell 110 is arranged in the accommodating
  • the battery 100 provided in the embodiment of the present invention has a notch 121 formed on the side wall of the outer shell 120, and the insulating member 130 is directly installed at the notch 121.
  • the insulating member 130 in the embodiment of the present invention can not only serve as a part of the outer shell 120 to play a role of protection and support, but also can play a role of isolating the adapter 140 from the outer shell 120.
  • a mounting hole 131 is formed on the insulating member 130, and the adapter 140 is arranged on the insulating member 130, so that the adapter 140 has a protrusion 141, and the protrusion 141 passes through the mounting hole 131 and extends to the inside of the outer shell 120.
  • the protrusion 141 is electrically connected to the pole ear assembly 111.
  • the insulating member 130 and the adapter 140 will occupy a very small part of the internal space of the outer shell 120, leaving more space for the arrangement of the battery cell 110, thereby improving the battery 100 without changing the overall size of the battery 100. Since the capacity density of the battery 100 is improved, the limited installation space of the battery 100 in the electronic device provided by this embodiment can accommodate a battery 100 with a larger capacity, so that the battery life of the electronic device can be extended.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池及电子设备，所述电池包括电芯、外壳、绝缘件以及转接片，外壳具有容纳腔，电芯设置于容纳腔中；外壳的侧壁上具有缺口，绝缘件安装在缺口处，绝缘件上具有安装孔；转接片设置在绝缘件上，转接片具有凸出部，凸出部贯穿安装孔并延伸至外壳内部，凸出部与电芯的极耳组件电连接。电子设备包括所述电池，在不改变电池尺寸的前提下提高了电池容量密度。

Description

电池及电子设备
本申请要求于2022年11月15日提交中国专利局、申请号为2022230513073、申请名称为“电池及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及新能源领域，尤其涉及一种电池及电子设备。
背景技术
电池是将化学能转化为电能的一种装置，其在生活中应用极广，随着电池行业的发展，对电池性能的要求也越来越高。
现有的电池一般包括电芯、外壳、绝缘件以及极柱，其中，电芯设置在外壳内，外壳用来将电芯保护起来，极柱从外壳外部伸入外壳内部与电芯的极耳电连接，以将电芯的电性延伸至外壳外部，以方便使用，绝缘件设置在外壳的内侧和外侧以及外壳与极柱之间。
然而，现有的极柱、绝缘件等本身会占用较大的空间，使得外壳内部的电芯体积下降、电池容量密度降低。
发明内容
为了解决背景技术中提到的至少一个问题，本发明提供一种电池及电子设备，提高了电池容量密度。
为了实现上述目的，本发明提供如下技术方案：
第一方面，本发明提供一种电池，该电池包括电芯、外壳、绝缘件以及转接片，外壳具有容纳腔，电芯设置于容纳腔中；外壳的侧壁上具有缺口，绝缘件安装在缺口处，绝缘件上具有安装孔；转接片设置在绝缘件上，转接片具有凸出部，凸出部贯穿安装孔并延伸至外壳内部，凸出部与电芯的极耳组件电连接。
作为一种可选的实施方式，绝缘件远离外壳的一侧具有安装槽，安装 孔位于安装槽底部，转接片设置在安装槽内，且转接片覆盖在安装孔处。
作为一种可选的实施方式，绝缘件的形状与缺口的形状相匹配，绝缘件卡接在缺口处。
作为一种可选的实施方式，绝缘件的相对的两侧边缘均具有滑槽，绝缘件通过滑槽卡接在缺口。
作为一种可选的实施方式，绝缘件的中部区域的厚度小于绝缘件的设置有滑槽的边缘的厚度。
作为一种可选的实施方式，转接片顶部与安装槽的槽壁之间形成焊接区，转接片与绝缘件在焊接区焊接在一起。
作为一种可选的实施方式，转接片的顶面不超过绝缘件的顶面。
作为一种可选的实施方式，极耳组件包括极耳，凸出部的底部抵接在极耳的表面。
作为一种可选的实施方式，极耳组件包括极耳和过流保护元件，过流保护元件连接在极耳与凸出部之间。
作为一种可选的实施方式，电芯外包覆有包装壳，电芯的极耳伸出包装壳。
作为一种可选的实施方式，极耳设置于电芯上，包装壳包括本体以及自本体的一侧边缘向外延伸的封边，包装壳的朝向极耳的一侧具有开口，封边向靠近本体的方向弯折；极耳沿着封边的弯折方向由开口伸出包装壳。
作为一种可选的实施方式，还包括散热层，散热层设置在包装壳与外壳相邻接的壁面之间。
作为一种可选的实施方式，外壳为金属壳，绝缘件为塑料件。
作为一种可选的实施方式，电芯为卷芯式或者层叠式结构。
作为一种可选的实施方式，缺口形状为矩形。
作为一种可选的实施方式，外壳由两部分壳体组合形成。
作为一种可选的实施方式，安装孔的形状为圆形或者矩形。
作为一种可选的实施方式，安装孔开设在绝缘件的几何中心。
作为一种可选的实施方式，散热层为散热涂胶。
第二方面，本发明还提供一种电子设备，该电子设备包括第一方面中的任意一种电池。
本发明提供的电池包括电芯、外壳、绝缘件以及转接片，外壳具有容纳腔，电芯设置于容纳腔中；外壳的侧壁上具有缺口，绝缘件安装在缺口处，绝缘件上具有安装孔；转接片设置在绝缘件上，转接片具有凸出部，凸出部贯穿安装孔并延伸至外壳内部，凸出部与电芯的极耳组件电连接。本发明提供的电池通过在外壳的侧壁上开设缺口，将绝缘件直接安装在缺口处，如此，本发明中的绝缘件不仅能充当一部分外壳，起到防护和支撑的作用，还可以起到将转接片和外壳隔绝的作用，然后在绝缘件上开设安装孔，将转接片设置在绝缘件上，使转接片具有凸出部，让凸出部贯穿安装孔并延伸至外壳内部，凸出部与极耳组件电连接，通过如此设置，绝缘件和转接片将占据很小一部分外壳的内部空间，为电芯的设置留下更大的空间，做到在不改变电池整体尺寸的前提下，提高了电池的容量密度。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作以简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种电池的整体结构示意图；
图2为图1的***图；
图3为图1的侧视图；
图4为图3中A-A处的剖视图；
图5为图4中B处的放大图；
图6为本发明实施例提供电池中绝缘件的整体结构示意图；
图7为6的侧视图；
图8为本发明实施例提供电池中转接片的示意图；
图9为图8的侧视图。
附图标记说明：
100-电池；
110-电芯；
111-极耳组件；
1111-极耳；
1112-过流保护元件；
120-外壳；
121-缺口；
130-绝缘件；
131-安装孔；
132-安装槽；
133-滑槽；
140-转接片；
141-凸出部；
150-包装壳。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
在申请中，术语“上”、“下”、“左”、“右”、“前”、“后”、“顶”、“底”、“内”、“外”、“竖直”、“水平”、“横向”、“纵向”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。这些术语主要是为了更好地描述本发明及其实施例，并非用于限定所指示的装置、元件或组成部分必须具有特定方位，或以特定方位进行构造和操作。
并且，上述部分术语除了可以用于表示方位或位置关系以外，还可能用于表示其他含义，例如术语“上”在某些情况下也可能用于表示某种依附关系或连接关系。对于本领域普通技术人员而言，可以根据具体情况理解这些术语在本发明中的具体含义。
此外，术语“安装”、“设置”、“设有”、“连接”、“相连”应做广义理解。例如，可以是固定连接，可拆卸连接，或整体式构造；可以是机械连接，或电连接；可以是直接相连，或者是通过中间媒介间接相连， 又或者是两个装置、元件或组成部分之间内部的连通。对于本领域普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
此外，术语“第一”、“第二”等主要是用于区分不同的装置、元件或组成部分(具体的种类和构造可能相同也可能不同)，并非用于表明或暗示所指示装置、元件或组成部分的相对重要性和数量。除非另有说明，“多个”的含义为两个或两个以上。
现有的电池一般包括电芯、外壳、绝缘件以及极柱，其中，电芯设置在外壳内，外壳用来将电芯保护起来，极柱从外壳外部伸入外壳内部与电芯的极耳电连接，以将电芯的电性延伸至外壳外部，以方便使用，绝缘件设置在外壳的内侧和外侧以及外壳与极柱之间。然而，现有的极柱、绝缘件等本身会占用较大的空间，使得外壳内部的电芯体积下降、电池容量密度降低。
有鉴于此，本发明提供一种电池，该电池包括电芯、外壳、绝缘件以及转接片，外壳具有容纳腔，电芯设置于容纳腔中；外壳的侧壁上具有缺口，绝缘件安装在缺口处，绝缘件上具有安装孔；转接片设置在绝缘件上，转接片具有凸出部，凸出部贯穿安装孔并延伸至外壳内部，凸出部与电芯的极耳组件电连接。本发明提供的电池通过在外壳的侧壁上开设缺口，将绝缘件直接安装在缺口处，如此，本发明中的绝缘件不仅能充当一部分外壳，起到防护和支撑的作用，还可以起到将转接片和外壳隔绝的作用，然后在绝缘件上开设安装孔，将转接片设置在绝缘件上，使转接片具有凸出部，让凸出部贯穿安装孔并延伸至外壳内部，凸出部与极耳组件电连接，通过如此设置，绝缘件和转接片将占据很小一部分外壳的内部空间，为电芯的设置留下更大的空间，做到在不改变电池整体尺寸的前提下，提高了电池的容量密度。
图1为本发明实施例提供的一种电池的整体结构示意图；图2为图1的***图；图3为图1的侧视图；图4为图3中A-A处的剖视图；图5为图4中B处的放大图；图6为本发明实施例提供电池中绝缘件的整体结构示意图；图7为6的侧视图；图8为本发明实施例提供电池中转接片的示意图；图9为图8的侧视图。可以参考图1至图9，本发明实施例提供一种电池100，该电池100包括电芯110、外壳120、绝缘件130以及转接片 140，外壳120具有容纳腔，电芯110设置于容纳腔中；外壳120的侧壁上具有缺口121，绝缘件130安装在缺口121处，绝缘件130上具有安装孔131；转接片140设置在绝缘件130上，转接片140具有凸出部141，凸出部141贯穿安装孔131并延伸至外壳120内部，凸出部141与电芯110的极耳组件111电连接。
其中，电芯110包括由负极材料制成的负极、由正极材料制成的正极以及分隔正负极的隔膜，电芯110的设置方式可以是卷芯式、层叠式等，本实施例对比不作具体限定。
需要说明的是，外壳120的作用是将电芯110保护其中，外壳120可以由两部分拼接而成，以方便安装。外壳120的材料可以选用不锈钢、铝合金等材料，结实且耐腐蚀，当然，外壳120也可以选用其他的材料，本实施例对此不作具体限制。
其中，外壳120可以是金属壳，绝缘件130的具体材料可以是树脂、塑料等，绝缘件130的主要作用是将外壳120和转接片140隔离开，防止二者电接触，绝缘件130设置在缺口121处，以取代缺口121处原有的部分外壳120，绝缘件130的尺寸、形状与缺口121的尺寸、形状相适应即可，具体地，缺口121的形状可以开设成矩形。
转接片140一般是选用导电性能良好的材料，例如铜、铝等，转接片140上的凸出部141可以事先通过冲压成型技术加工好，装配时再将转接片140安装在绝缘件130上的安装孔131处，或者，也可以先将转接片140覆盖在安装孔131处，然后再在转接片140上冲出上述凸出部141，此种加工方式一方面可保证凸出部141与安装孔131的紧密结合，另一方面可方便控制凸出部141的长度尺寸。
安装孔131一般可以开设在绝缘件130的几何中心上，如此，可以尽可能地保证转接片140的边缘距离绝缘件130的边缘的距离相对均匀，以保证绝缘件130的隔绝效果。
本发明实施例提供的电池100通过在外壳120的侧壁上开设缺口121，将绝缘件130直接安装在缺口121处，如此，本发明实施例中的绝缘件130不仅能充当一部分外壳120，起到防护和支撑的作用，还可以起到将转接片140和外壳120隔绝的作用，然后在绝缘件130上开设安装孔131，将 转接片140设置在绝缘件130上，使转接片140具有凸出部141，让凸出部141贯穿安装孔131并延伸至外壳120内部，凸出部141与极耳组件111电连接，通过如此设置，绝缘件130和转接片140将占据很小一部分外壳120的内部空间，为电芯110的设置留下更大的空间，做到在不改变电池100整体尺寸的前提下，提高了电池100的容量密度。
上述实施例中，可以在绝缘件130远离外壳120的一侧设置安装槽132，可将安装孔131开设在安装槽132的底部，转接片140设置在安装槽132内，并且转接片140覆盖在安装孔131处。其中，使安装槽132的深度与转接片140的厚度相当即可，将转接片140设置在安装槽132中，一方面，可以使电池100结构更加紧凑，增加电池100的整体稳固性，另一方面，转接片140可以不必凸出外壳120表面，进一步降低电池100整体尺寸。
上述实施例中，可使绝缘件130的形状与缺口121的形状相匹配，绝缘件130卡接在缺口121处。
上述实施例中，绝缘件130与缺口121的安装方式可以有多种，例如，可以在绝缘件130的相对的两侧边缘均具有滑槽133，使绝缘件130通过滑槽133卡接在缺口121。具体地，如图2所示，外壳120可采用组合式，在其中一部分外壳120的侧壁上开设缺口121，缺口121的开口为与另一部分外壳120相结合之处，绝缘件130沿着滑槽133从缺口121的开口处卡入缺口121中，当两部分外壳120组合在一起时，可以使未设绝缘件130的那部分外壳120挡在缺口121的开口处，以防止绝缘件130从缺口121脱离，以如此方式设计绝缘件130，不仅方便装卸，且可以安装的更加牢固。
如图8所示，上述实施例中，绝缘件130的中部区域的厚度小于绝缘件130的设置有滑槽133的边缘的厚度。其中，绝缘件130上开设滑槽133的部位的厚度可以必外壳120的厚度厚一些，以保证滑槽133能够卡入缺口121边缘，两滑槽133之间部分的绝缘件130厚度与外壳120厚度相当即可，如此，可以尽可能降低绝缘件130所占空间。
实施的时候，转接片140顶部与安装槽132的槽壁之间可以形成焊接区，可以将转接片140与绝缘件130在焊接区焊接在一起。
上述实施例中，还可以使转接片140的顶面不超过绝缘件的顶面，以尽可能地降低电池100的尺寸。
上述实施例中，极耳组件111可以包括极耳1111，可以使凸出部141的底部抵接在极耳1111的表面。其中，极耳1111可经过弯折后贴合在电芯110表面，凸出部141穿过安装孔131后直接抵接在极耳1111表面，再将凸出部141与极耳1111焊接在一起，此种方式，结构紧凑、装配方便。
在另一种实施方式中，极耳组件111包括极耳1111和过流保护元件1112，过流保护元件1112连接在极耳1111与凸出部之间。其中，过流保护元件1112的作用主要是防止电池100充放电过程中电流过高，烧毁电池100，具体地，过流保护元件1112中一般具体传感器，且过流保护元件1112平时为常闭状态，当传感器检测到流经过流保护元件1112的电流过高时，过流保护元件1112的常闭开关打开，既过流保护元件1112处于断开状态，从而断开极耳1111与转接片140之间的电连接，需要说明的是，过流保护元件1112一般设置在正极极耳1111处。
上述实施例中，还可以在电芯110外包覆有包装壳150，电芯110的极耳1111伸出包装壳150，通过这种内外双层将电芯110包覆其中，进一步防止电池100漏液的发生。
上述实施例中，极耳1111设置于电芯110上，包装壳150可以包括本体以及自本体的一侧边缘向外延伸的封边，包装壳150的朝向极耳1111的一侧具有开口，封边向靠近本体的方向弯折；极耳1111沿着封边的弯折方向由开口伸出包装壳150。
上述实施例中，还可以在包装壳150与外壳120相邻接的壁面之间设置散热层。其中，散热层可使用散热涂胶，散热涂胶可涂覆在包装壳150外壁上，以帮助电芯110更好的散热。
上述实施例中，安装孔131可以设置为圆形，相应地，凸出部141的外形也可以加工成圆形，圆形的凸出部141具有易加工的优点。当然，安装孔131的形状也可以是其他形状，例如方形、矩形等，安装孔131加工成这些非圆形状，可以保证凸出部141安装入安装孔131后，无法相对于安装孔131转动，进一步提高转接片140的稳固性。
本发明实施例提供的电池100包括电芯110、外壳120、绝缘件130以及转接片140，外壳120具有容纳腔，电芯110设置于容纳腔中；外壳120的侧壁上具有缺口121，绝缘件130安装在缺口121处，绝缘件130上具有安装孔131；转接片140设置在绝缘件130上，转接片140具有凸出部141，凸出部141贯穿安装孔131并延伸至外壳120内部，凸出部141与电芯110的极耳组件111电连接。本发明实施例提供的电池100通过在外壳120的侧壁上开设缺口121，将绝缘件130直接安装在缺口121处，如此，本发明实施例中的绝缘件130不仅能充当一部分外壳120，起到防护和支撑的作用，还可以起到将转接片140和外壳120隔绝的作用，然后在绝缘件130上开设安装孔131，将转接片140设置在绝缘件130上，使转接片140具有凸出部141，让凸出部141贯穿安装孔131并延伸至外壳120内部，凸出部141与极耳组件111电连接，通过如此设置，绝缘件130和转接片140将占据很小一部分外壳120的内部空间，为电芯110的设置留下更大的空间，做到在不改变电池100整体尺寸的前提下，提高了电池100的容量密度。
此外，本发明还提供一种电子设备，该电子设备包括上述实施例中的任意一中电池100，该电池100包括电芯110、外壳120、绝缘件130以及转接片140，外壳120具有容纳腔，电芯110设置于容纳腔中；外壳120的侧壁上具有缺口121，绝缘件130安装在缺口121处，绝缘件130上具有安装孔131；转接片140设置在绝缘件130上，转接片140具有凸出部141，凸出部141贯穿安装孔131并延伸至外壳120内部，凸出部141与电芯110的极耳组件111电连接。本发明实施例提供的电池100通过在外壳120的侧壁上开设缺口121，将绝缘件130直接安装在缺口121处，如此，本发明实施例中的绝缘件130不仅能充当一部分外壳120，起到防护和支撑的作用，还可以起到将转接片140和外壳120隔绝的作用，然后在绝缘件130上开设安装孔131，将转接片140设置在绝缘件130上，使转接片140具有凸出部141，让凸出部141贯穿安装孔131并延伸至外壳120内部，凸出部141与极耳组件111电连接，通过如此设置，绝缘件130和转接片140将占据很小一部分外壳120的内部空间，为电芯110的设置留下更大的空间，做到在不改变电池100整体尺寸的前提下，提高了电池100 的容量密度。由于该电池100的电池100容量密度得以提高，使得本实施例提供的电子设备中的有限的电池100安装空间可以容纳更大容量的电池100，使得该电子设备的续航得以延长。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (20)

  1. 一种电池，其特征在于，包括电芯、外壳、绝缘件以及转接片，所述外壳具有容纳腔，所述电芯设置于所述容纳腔中；所述外壳的侧壁上具有缺口，所述绝缘件安装在所述缺口处，所述绝缘件上具有安装孔；所述转接片设置在所述绝缘件上，所述转接片具有凸出部，所述凸出部贯穿所述安装孔并延伸至所述外壳内部，所述凸出部与所述电芯的极耳组件电连接。
  2. 根据权利要求1所述的电池，其特征在于，所述绝缘件远离所述外壳的一侧具有安装槽，所述安装孔位于所述安装槽底部，所述转接片设置在所述安装槽内，且所述转接片覆盖在所述安装孔处。
  3. 根据权利要求2所述的电池，其特征在于，所述绝缘件的形状与所述缺口的形状相匹配，所述绝缘件卡接在所述缺口处。
  4. 根据权利要求3所述的电池，其特征在于，所述绝缘件的相对的两侧边缘均具有滑槽，所述绝缘件通过所述滑槽卡接在所述缺口。
  5. 根据权利要求4所述的电池，其特征在于，所述绝缘件的中部区域的厚度小于所述绝缘件的设置有所述滑槽的边缘的厚度。
  6. 根据权利要求2-5任意一项所述的电池，其特征在于，所述转接片顶部与所述安装槽的槽壁之间形成焊接区，所述转接片与所述绝缘件在所述焊接区焊接在一起。
  7. 根据权利要求1-5任意一项所述的电池，其特征在于，所述转接片的顶面不超过所述绝缘件的顶面。
  8. 根据权利要求1-5任意一项所述的电池，其特征在于，所述极耳组件包括极耳，所述凸出部的底部抵接在所述极耳的表面。
  9. 根据权利要求1-5任意一项所述的电池，其特征在于，所述极耳组件包括极耳和过流保护元件，所述过流保护元件连接在所述极耳与所述凸出部之间。
  10. 根据权利要求1-5任意一项所述的电池，其特征在于，所述电芯外包覆有包装壳，所述电芯的极耳伸出所述包装壳。
  11. 根据权利要求10所述的电池，其特征在于，所述极耳设置于所述电芯上，所述包装壳包括本体以及自所述本体的一侧边缘向外延伸的封边，所 述包装壳的朝向所述极耳的一侧具有开口，所述封边向靠近所述本体的方向弯折；所述极耳沿着所述封边的弯折方向由所述开口伸出所述包装壳。
  12. 根据权利要求11所述的电池，其特征在于，还包括散热层，所述散热层设置在所述包装壳与所述外壳相邻接的壁面之间。
  13. 根据权利要求1-5任意一项所述的电池，其特征在于，所述外壳为金属壳，所述绝缘件为塑料件。
  14. 根据权利要求1-5任意一项所述的电池，其特征在于，所述电芯为卷芯式或者层叠式结构。
  15. 根据权利要求1-5任意一项所述的电池，其特征在于，所述缺口形状为矩形。
  16. 根据权利要求1-5任意一项所述的电池，其特征在于，所述外壳由两部分壳体组合形成。
  17. 根据权利要求1-5任意一项所述的电池，其特征在于，所述安装孔的形状为圆形或者矩形。
  18. 根据权利要求17所述的电池，其特征在于，所述安装孔开设在所述绝缘件的几何中心。
  19. 根据权利要求12所述的电池，其特征在于，所述散热层为散热涂胶。
  20. 一种电子设备，其特征在于，该电子设备包括权利要求1-19任意一项所述的电池。
PCT/CN2023/117838 2022-11-15 2023-09-08 电池及电子设备 WO2024103931A1 (zh)

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