WO2024187648A1 - 电池壳体、电池及电子设备 - Google Patents

电池壳体、电池及电子设备 Download PDF

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Publication number
WO2024187648A1
WO2024187648A1 PCT/CN2023/106354 CN2023106354W WO2024187648A1 WO 2024187648 A1 WO2024187648 A1 WO 2024187648A1 CN 2023106354 W CN2023106354 W CN 2023106354W WO 2024187648 A1 WO2024187648 A1 WO 2024187648A1
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WIPO (PCT)
Prior art keywords
plate
plate body
positive electrode
electrode assembly
battery case
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/106354
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English (en)
French (fr)
Inventor
陈海峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Ruilong Technology Co Ltd
Original Assignee
China Ruilong Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Ruilong Technology Co Ltd filed Critical China Ruilong Technology Co Ltd
Priority to EP23926994.7A priority Critical patent/EP4683048A4/en
Publication of WO2024187648A1 publication Critical patent/WO2024187648A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular 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 present invention relates to the technical field of battery packaging, and in particular to a battery casing, a battery and an electronic device.
  • the field of battery technology includes many technical branches, among which battery electrode packaging technology is one of the main research projects currently being conducted by technicians in this field.
  • the prior art provides a packaging shell and a battery (CN207504023U), in which the positive electrode column is riveted to the first side wall, the negative electrode column tab is welded to the first side wall, and the nail covering is formed on the liquid injection port and welded on the outer surface of the first side wall.
  • the side wall height of the battery casing is only between 3.5mm and 8.0mm, and there are other side walls blocking the surrounding sides.
  • the purpose of the present invention is to provide a battery housing, a battery and an electronic device, which facilitate the installation of a positive electrode assembly.
  • the present invention provides a battery housing, comprising:
  • a bottom plate comprising a first plate body, a second plate body and a connecting plate body connected between the first plate body and the second plate body;
  • a peripheral side plate which is arranged around the outer periphery of the bottom plate and connected to the bottom plate to form a receiving cavity with one end open;
  • the positive electrode assembly is arranged on the second plate body.
  • the battery housing further includes a cover plate connected to the opening, the cover plate is arranged opposite to the first plate body and the second plate body, and seals the accommodating cavity.
  • a flange edge extends outward from the free end of the peripheral side plate, the cover plate is connected to the flange edge, and the distance between the first plate body and the cover plate is greater than the distance between the second plate body and the cover plate.
  • the accommodating cavity includes a first accommodating cavity formed between the cover plate and the first plate body and a second accommodating cavity formed between the cover plate and the second plate body, and the first accommodating cavity and the second accommodating cavity are connected to each other.
  • the positive electrode assembly is disposed inside the second plate body, and the positive electrode assembly includes a positive electrode column and an external insulating member, and the external insulating member separates the positive electrode column from the second plate body.
  • the positive electrode column includes a column and a first sheet connected to the end of the column; the outer insulating member is arranged on the outside of the column and partially embedded in the second plate; the outer insulating member includes a ring body and a sleeve connected to the ring body, the sleeve is arranged on the outside of the column and penetrated into the second plate, and the ring body is also provided with a limiting groove for accommodating the first sheet, and the first sheet is exposed outside the second plate.
  • the positive electrode assembly also includes an internal insulating member, and the internal insulating member separates the positive electrode column and the cover plate.
  • the inner insulating member separates the positive electrode column from the second plate body; the inner insulating member includes a first arm portion and a second arm portion that are arranged opposite to each other, and the positive electrode column is at least partially located between the first arm portion and the second arm portion.
  • the first arm is fitted with the second plate
  • the second arm is fitted with the cover
  • the positive electrode column includes a second sheet, the first sheet and the second sheet are respectively located at two ends of the column, the second sheet is located between the first arm and the second arm, and the column passes through the second plate and extends to the outside of the second plate.
  • a groove is provided at the connection between the first arm portion and the second arm portion, and the first arm portion and the second arm portion are folded and arranged opposite to each other through the groove.
  • the first arm portion and the second arm portion are The included angle is 0-180° or 0-90°.
  • the groove includes a groove bottom surface and a connecting surface connected between the groove bottom surface and the first arm portion or the second arm portion;
  • the groove bottom surface is arc-shaped, rectangular, trapezoidal with chamfers or rectangular with chamfers, and the connecting surface is an arc surface, a plane or a slope.
  • the negative electrode assembly also includes a negative electrode assembly conductively connected to the second plate body, and the negative electrode assembly includes a connecting piece connected to the second plate body.
  • the second plate body is a single independent component or is composed of multiple components.
  • the second plate body includes a first part and a second part, the first part and the second part are connected by a connecting part, the first part and the second part form a stepped structure, and the positive electrode assembly and the negative electrode assembly are respectively arranged on the first part and the second part.
  • the present invention further provides a battery, comprising the battery housing described above and a battery cell disposed in a first accommodating cavity of the battery housing.
  • the present invention further provides an electronic device, comprising the battery housing described above; or comprising the battery described above.
  • the present invention has the following advantages:
  • the battery case of the present invention is connected by a bottom plate and a peripheral side plate arranged around the outer periphery of the bottom plate to form a receiving cavity with an opening at one end, and the bottom plate is divided into three parts: a first plate body, a second plate body and a connecting plate body connected between the first plate body and the second plate body.
  • the positive electrode assembly is arranged on the second plate body.
  • the width of the second plate body that controls the positive electrode assembly can be freely installed, and on the other hand, there is no obstruction from other components in the installation direction, which facilitates the installation operation of the positive electrode assembly and reduces the requirements for the packaging process, thereby greatly improving the production efficiency and the product qualification rate.
  • FIG1 is a schematic structural diagram of a battery housing according to an embodiment of the present invention.
  • FIG2 is a schematic structural diagram of another embodiment of a battery housing in the present invention.
  • FIG3 is a cross-sectional view of a battery housing according to an embodiment of the present invention.
  • FIG4 is a partial enlarged view of point A in FIG3 ;
  • FIG5 is an exploded view of a battery housing according to an embodiment of the present invention.
  • FIG6 is an exploded view of a positive electrode assembly according to an embodiment of the present invention.
  • FIG7 is a cross-sectional view of another embodiment of a battery housing in the present invention.
  • FIG8 is a partial enlarged view of point B in FIG7;
  • FIG9 is an exploded view of another embodiment of a battery housing according to the present invention.
  • FIG10 is an exploded view of another embodiment of a positive electrode assembly in the present invention.
  • FIG11 is a schematic structural diagram of an inner insulating member in an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another embodiment of the inner insulating member of the present invention.
  • FIG. 13 is a schematic structural diagram of another embodiment of the inner insulating member of the present invention.
  • FIG. 14 is a schematic structural diagram of another embodiment of the inner insulating member of the present invention.
  • 15 is a schematic structural diagram of another embodiment of the inner insulating member of the present invention.
  • 16 is a schematic structural diagram of another embodiment of the inner insulating member of the present invention.
  • 17 is a schematic structural diagram of another embodiment of the inner insulating member of the present invention.
  • FIG. 18 is a schematic structural diagram of another embodiment of the inner insulating member of the present invention.
  • FIG19 is a schematic structural diagram of a bottom plate and a peripheral side plate in an embodiment of the present invention.
  • 20 is a schematic structural diagram of another embodiment of the bottom plate and the peripheral side plate of the present invention.
  • FIG21 is a cross-sectional view of a battery according to an embodiment of the present invention.
  • FIG. 22 is an exploded view of a battery according to an embodiment of the present invention.
  • the present invention discloses a battery casing, including a bottom plate 1 , a peripheral side plate 2 and an electrode assembly.
  • the bottom plate 1 comprises a first plate body 101, a second plate body 102 and a connecting plate body 103 connected between the first plate body 101 and the second plate body 102.
  • a step structure is formed between the first plate body 101 and the second plate body 102.
  • the peripheral side plate 2 is disposed around the outer periphery of the bottom plate 1 and is connected to the bottom plate 1 to form a receiving cavity with an opening 201 at one end.
  • the electrode assembly includes a positive electrode assembly 4 disposed on the second plate body 102 .
  • the bottom plate 1 and the peripheral side plate 2 arranged around the outer periphery of the bottom plate 1 are connected to form a receiving cavity with an opening at one end, and the bottom plate 1 is divided into three parts: a first plate body 101, a second plate body 102, and a connecting plate body 103 connected between the first plate body 101 and the second plate body 102.
  • the positive electrode assembly 4 is arranged on the second plate body 102.
  • the width and area of the second plate body 102 for installing the positive electrode assembly 4 can be freely controlled.
  • there is no obstruction from other components in the installation direction which facilitates the installation operation of the positive electrode assembly 4 and reduces the requirements for the packaging process, thereby greatly improving the production efficiency and product qualification rate.
  • the battery housing also includes a cover plate 3 connected to the opening 201.
  • the cover plate 3 is arranged opposite to the first plate body 101 and the second plate body 102, and seals the accommodating cavity to form a closed cavity. It can be understood that the cover plate 3 is located on the opposite side of the bottom plate 1.
  • the bottom plate 1 and the cover plate 3 are both made of metal or alloy material, and the alloy material is preferably stainless steel. Preferably, in this embodiment, the bottom plate 1 and the cover plate 3 are both made of conductive stainless steel.
  • the bottom plate 1 includes a first plate body 101, a second plate body 102, and a connecting plate body 103 connected between the first plate body 101 and the second plate body 102.
  • the shapes of the first plate body 101 and the second plate body 102 are not limited, and can be rectangular, L-shaped, T-shaped, circular, I-shaped, etc. In some embodiments, as shown in FIG1, the first plate body 101 and the second plate body 102 are both rectangular.
  • the free ends of the first plate body 101 and the second plate body 102 are both provided with a notch 104 to facilitate subsequent assembly and fixation.
  • the first plate body 101 and the second plate body 102 are not in the same horizontal position.
  • the first plate body 101 and the second plate body 102 are arranged in parallel, presenting a stepped structure, and the second plate body 12 is arranged close to the opening 201. It can be understood that, as shown in FIG3 and FIG19, the distance H1 between the first plate body 101 and the cover plate 3 is greater than the distance H2 between the second plate body 102 and the cover plate 3.
  • a first accommodating cavity 202 for accommodating the battery cell is formed between the first plate body 101 and the cover plate 3
  • a second accommodating cavity 203 for accommodating the positive electrode assembly 4 is formed between the second plate body 102 and the cover plate 3 .
  • the first accommodating cavity 202 and the second accommodating cavity 203 are interconnected to form an accommodating cavity.
  • a flange 204 is extended outward from the free end of the peripheral side plate 2.
  • the flange 204 is arranged parallel to the first plate body 101 or the second plate body 102, and extends horizontally away from the accommodating cavity.
  • the cover plate 3 is connected to the flange 204 by welding and then dispensing glue, so as to seal the accommodating cavity.
  • the positive electrode assembly 4 includes a positive electrode column 401 and an outer insulating member 402, and the outer insulating member 402 separates the positive electrode column 401 from the second plate 102.
  • the positive electrode column 401 and the outer insulating member 402 are fixed to the second plate 102 by riveting, and the positive electrode column 401 effectively fixes the position of the outer insulating member 402.
  • the positive electrode assembly 4 is arranged on the second plate 102 , and the positive electrode assembly 4 is partially arranged in the second accommodating cavity 203 , and partially exposed outside the battery housing.
  • the positive electrode assembly 4 includes a positive electrode column 401 , an external insulating member 402 and a conductive sheet 404 .
  • the positive electrode column 401 and the conductive sheet 404 are both made of aluminum.
  • the positive electrode column 401 includes a column 4011 and a first sheet 4012 and a second sheet 4013 connected at both ends of the column 4011 .
  • the cross-sectional shape of the column 4011 is circular
  • the cross-sectional shape of the first sheet 4012 is rectangular
  • the cross-sectional shape of the second sheet 4013 is circular.
  • the size of the first sheet 4012 is larger than that of the second sheet 4013
  • the diameter of the second sheet 4013 is larger than that of the column 4011 .
  • the second plate 102 is provided with a first avoidance hole 1021 corresponding to the column 4011
  • the outer insulating member 402 is provided with a second avoidance hole 4021 corresponding to the column 4011
  • the conductive sheet 404 is provided with a fourth avoidance hole 4041 corresponding to the column 4011
  • the column The body 4011 passes through the second avoidance hole 4021, the first avoidance hole 1021 and the fourth avoidance hole 4041 in sequence
  • the first sheet 4012 is arranged on the outside of the second avoidance hole 4021 and away from one end of the second accommodating cavity 203 (that is, exposed outside the battery shell)
  • the second sheet 4013 is arranged on the outside of the fourth avoidance hole 4041 and close to one end of the second accommodating cavity 203 (that is, arranged in the second accommodating cavity 203).
  • the outer insulating member 402 is located outside the second plate 102, is arranged outside the column 4011, and is partially embedded in the second plate 102.
  • the outer insulating member 402 includes a ring body 4022 with a second avoidance hole 4021 and a sleeve 4023 extending along the axis of the second avoidance hole 4021, the sleeve 4023 is penetrated on the second plate 102, and a limiting groove 4024 for accommodating the first sheet 4012 is also arranged on the ring body 4022, the first sheet 4012 is exposed outside the second plate 102, the limiting groove 4024 is connected with the second avoidance hole 4021, the ring body 4022 and the sleeve 4023 are arranged outside the column 4011 through the second avoidance hole 4021, and the sleeve 4023 is partially embedded in the second plate 102.
  • the outer insulating member 402 isolates the positive electrode column 401 from contact with the outer wall of the second plate body 102 and the inner wall of the first avoidance hole 4021 , so that the positive electrode column 401 is insulated and connected with the second plate body 102 to avoid short circuit.
  • the positive electrode assembly 4 also includes an internal insulating member 403, which separates the positive electrode column 401 from the cover plate 3.
  • the positive electrode column 401 and the internal insulating member 403 are fixed by riveting, and the position of the internal insulating member 403 is effectively fixed by the positive electrode column 401.
  • At least part of the cover plate 3 is arranged opposite to the second plate body 102, and the positive pole 401 and the cover plate 3 are separated by the internal insulating member 403, thereby avoiding the short circuit phenomenon caused by the positive pole 401 touching the cover plate 3, and being able to insulate the second plate body 102 and the cover plate 3 at the same time.
  • the outer insulating member 402 is located on the outside of the second plate body 102, and the inner insulating member 403 is located on the inside of the second plate body 102.
  • the outer insulating member 402 separates the positive pole 401 from the second plate body 102, and the inner insulating member 403 separates the positive pole 401 from the second plate body 102 and the cover plate 3.
  • the outer insulating member 402 and the inner insulating member 403 are used in coordination to insulate the positive pole 401 from the second plate body 102.
  • the inner insulating member 403 separates the positive pole 401 from the cover plate 3, thereby avoiding a short circuit caused by the positive pole 401 touching the cover plate 3. elephant.
  • the inner insulator 403 includes a first arm 4031 and a second arm 4032 that are arranged opposite to each other.
  • the positive pole 401 is at least partially located between the first arm 4031 and the second arm 4032, and a groove 4033 is provided at the connection between the first arm 4031 and the second arm 4032.
  • the inner insulator 403 is made of a polymer material, preferably a silicone or plastic material, and has good insulation and elasticity. Due to the elasticity of the inner insulator 403 itself, the first arm 4031 and the second arm 4032 can be folded through the groove 4033 to be arranged opposite to each other.
  • the angle between the first arm 4031 and the second arm 4032 is 0-180°; as shown in Figures 15 to 18, more preferably, when the inner insulator 403 is in a free state, the angle between the first arm 4031 and the second arm 4032 is 0-90°.
  • the first arm 4031 and the second arm 4032 are folded by the groove 4033 to be arranged opposite to each other up and down. The first arm 4031 or the second arm 4032 can effectively cover the space between the positive pole 401 and the cover plate 3 to prevent the positive pole 401 from touching the cover plate 3.
  • the groove 4033 includes a groove bottom surface 4034 and a connecting surface 4035 connected between the groove bottom surface 4034 and the first arm portion 4031 or the second arm portion 4032.
  • the groove bottom surface 4034 is arc-shaped, rectangular, trapezoidal, trapezoidal with chamfers or rectangular with chamfers
  • the connecting surface 4035 is an arc surface, a plane or an inclined surface.
  • the inner insulating member 403 is in a free state, and the angle between the first arm portion 4031 and the second arm portion 4032 is 180°.
  • the cross-sectional shape of the groove bottom surface 4034 is an arc
  • the connecting surface 4035 is an arc
  • the cross-sectional shape of the groove bottom surface 4034 is a rectangle
  • the connecting surface 4035 is an arc
  • the cross-sectional shape of the groove bottom surface 4034 is a chamfered trapezoid, and the connecting surface 4035 is an arc; in other embodiments, as shown in FIG. 14 , the cross-sectional shape of the groove bottom surface 4034 is a chamfered rectangle, and the connecting surface 4035 is a plane.
  • the inner insulator 403 is in a free state, and the angle between the first arm portion 4031 and the second arm portion 4032 is 90°; in some embodiments, as shown in FIG. 15 , the cross-sectional shape of the groove bottom surface 4034 is arc-shaped, and the connecting surface 4035 is an arc surface; in other embodiments, as shown in FIG. 16 , the cross-sectional shape of the groove bottom surface 4034 is rectangular, and the connecting surface 4035 is an arc surface; in other embodiments, as shown in FIG.
  • the cross-sectional shape of the groove bottom surface 4034 is a trapezoid with chamfers, and the connecting surface 4035 is an inclined surface; in another embodiment, as shown in FIG. In some embodiments, as shown in FIG. 18 , the cross-sectional shape of the groove bottom surface 4034 is a chamfered rectangle, and the connecting surface 4035 is an inclined surface.
  • the cross-sectional shape of the groove bottom surface 4034 is not limited.
  • the structure of the groove 4033 makes it easier to fold the first arm 4031 and the second arm 4032, and a gap is formed at the folded position to prevent the connecting ends of the folded first arm 4031 and the second arm 4032 from conflicting with each other, so that a distance is left between the two, which facilitates the installation and positioning of the positive electrode 401.
  • the side walls 4036 of the free ends of the first arm 4031 and the second arm 4032 are arc surfaces, inclined surfaces, or a combination of arc surfaces and inclined surfaces, which can further prevent the free ends of the folded first arm 4031 and the second arm 4032 from conflicting with each other, and the design is reasonable.
  • the positive electrode assembly 4 is disposed on the second plate 102 , and the positive electrode assembly 4 is partially disposed in the second accommodating cavity 203 and partially exposed outside the battery housing.
  • a third avoidance hole 4037 corresponding to the column 4011 is provided on the inner insulating member 403 , and the column 4011 passes through the second avoidance hole 4021 , the first avoidance hole 1021 , the third avoidance hole 4037 and the fourth avoidance hole 4041 in sequence, the first sheet 4012 is disposed outside the second avoidance hole 4021 and away from one end of the second accommodating cavity 203 (i.e., exposed outside the battery housing), and the second sheet 4013 is disposed outside the fourth avoidance hole 4041 and close to one end of the second accommodating cavity 203 (i.e., disposed inside the second accommodating cavity 203 ).
  • the third avoidance hole 4037 is provided on the first arm portion 4031 or the second arm portion 4032 of the inner insulating member 403.
  • the third avoidance hole 4037 is provided on the first arm portion 4031 as an example.
  • the sleeve portion 4023 of the outer insulating member 402 passes through the first avoidance hole 4021 of the second plate body 102 and is partially embedded in the third avoidance hole 4037 of the first arm portion 4031.
  • the sleeve portion 4023 does not need to be embedded in the first arm portion 4031. It passes through the first avoidance hole 1021 and can directly abut against the outer side of the first arm portion 4031.
  • the first arm 4031 is arranged on the outside of the column 4011 through the third avoidance hole 4037.
  • the conductive sheet 404 is arranged on the outside of the column 4011 through the fourth avoidance hole 4041.
  • the conductive sheet 404 is located between the first arm 4031 and the second arm 4032, and the second sheet 4013 of the positive pole 401 is located on the outside of the conductive sheet 404.
  • the second arm 4032 can be directly elastically abutted against the inner side of the cover plate 3, which saves the fixing process of the second arm 4032.
  • the second arm 4032 can also be fixed by gluing.
  • the arm 4032 is fitted with the cover plate 3, and the second arm 4032 of the inner insulating member 403 isolates the second sheet 4013 of the positive electrode 401 from colliding with the cover plate 3 to prevent short circuit.
  • the battery cell is conductively connected to the conductive sheet 404, and the length and area of the conductive sheet 404 can be increased as needed to facilitate connection with the battery cell.
  • the electrode assembly also includes a negative electrode assembly 5 conductively connected to the second plate body 102.
  • the negative electrode assembly 5 includes a connecting plate connected to the second plate body 102, and the connecting plate is made of nickel material.
  • the negative electrode assembly 5 is arranged on the outside of the second plate body 102. When the battery shell is in use, the battery cell only needs to be connected to the second plate body 102 to be conductively connected to the negative electrode assembly 5.
  • the second plate body 102 is further provided with a liquid injection hole 1022 for electrolyte (not shown) to enter the accommodating cavity, and the liquid injection hole 1022 is installed with a liquid blocking plug 6 with an interference fit, and the material of the liquid blocking plug 6 is stainless steel.
  • the liquid injection hole 1022 is provided on the second plate body 102 and is located on a side close to the negative electrode assembly 5, and the electrolyte is conveniently filled into the accommodating cavity through the liquid injection hole 1022.
  • the second plate body 102 is a single independent component or is composed of multiple components. In some embodiments, as shown in Figures 1, 2, 5, 9 and 19, the second plate body 102 is a single independent component, and in other embodiments, the second plate body 102 is composed of multiple components. As shown in Figure 20, in other embodiments, the second plate body 102 includes a first part 1023 and a second part 1024, the first part 1023 and the second part 1024 are connected by a connecting portion 1025, the second part 1024 is higher than the first part 1023, and the first part 1023 and the second part 1024 form a stepped structure.
  • the positive electrode assembly 4 is arranged in the first part 1023, and the negative electrode assembly 5 and the injection hole 1022 are arranged in the second part 1024.
  • the first part 1021 and the second part 1022 form a stepped structure, so that when the subsequent electrode assembly is laser welded, it is convenient to take the point after the laser light source is emitted, and it is also convenient for subsequent assembly.
  • the first portion 1023 may be higher than the second portion 1024 .
  • the present application also proposes a battery, comprising a battery housing of the above structure and a battery cell 7 disposed in a first accommodation cavity 202 of the battery housing, wherein the battery cell 7 is conductively connected to a conductive sheet 404 of a positive electrode assembly 4.
  • the accommodation cavity of the battery housing can be filled with an electrolyte, and the electrolyte allows the positive electrode assembly 4 and the negative electrode assembly 5 to conduct ions, thereby ensuring that the battery has advantages such as high voltage and high specific energy.
  • the shape of the battery core 7 corresponds to the cross-sectional shape of the first accommodating cavity 202 .
  • the present invention further provides an electronic device, which is provided with a battery housing having the above structure; or a battery having the above structure.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

一种电池壳体、电池及电子设备，该电池壳体包括底板、周侧板以及正极组件，底板具有第一板体、第二板体以及连接在第一板体和第二板体之间的连接板体；周侧板环设在底板外周、并与底板连接形成一端开口的容置腔；正极组件设于第二板体。将底板分成第一板体、第二板体以及连接在第一板体和第二板体之间的连接板体三个部分，将正极组件设置在第二板体上，方便了正极组件的安装，降低了对封装工艺的要求，从而大大提高了生产效率和产品合格率，同时由正极组件的内绝缘件隔开正极柱与盖板，避免了正极柱触碰到盖板而产生的短路现象。

Description

电池壳体、电池及电子设备
优先权信息：本申请要求于2023年3月15日提交的申请号为的中国专利202320499475.4申请的优先权，其全部内容通过引用并入本文。
技术领域
本发明涉及电池封装技术领域，特别涉及一种电池壳体、电池及电子设备。
背景技术
电池技术领域包含的技术分支很多，其中，电池电极封装技术即是本领域技术人员目前主要研究的项目之一。
现有技术提供了一种包装壳及电池(CN207504023U)，将正极极柱铆接在第一侧壁上，负极柱接片焊接在第一侧壁上，钉覆盖形成在注液口并焊接在第一侧壁的外表面上。
通常电池壳体的侧壁高度仅在3.5mm～8.0mm之间，并且周侧有其余侧壁阻碍，在实际封装过程中，要在侧壁上完成开孔、铆接、焊接等操作十分不方便，这对封装工艺有着极高的要求，大大影响了生产效率。
因此，有必要对现有技术予以改良以克服现有技术中的所述缺陷。
发明内容
本发明的目的是提供一种电池壳体、电池及电子设备，方便正极组件的安装。
为了解决上述技术问题，第一方面，本发明提出了一种电池壳体，包括：
底板，具有第一板体、第二板体以及连接在所述第一板体和所述第二板体之间的连接板体；
周侧板，环设在所述底板外周、并与所述底板连接形成一端开口的容置腔；以及，
正极组件，设于所述第二板体。
进一步地，所述电池壳体还包括与所述开口相连的盖板，所述盖板与所述第一板体和所述第二板体相对设置，且封住所述容置腔。
进一步地，所述周侧板的自由端向外延伸有法兰边，所述盖板与所述法兰边相连，所述第一板体与所述盖板之间的距离大于所述第二板体与所述盖板之间的距离。
进一步地，所述容置腔包括形成在所述盖板和所述第一板体之间的第一容置腔和形成在所述盖板和所述第二板体之间的第二容置腔，所述第一容置腔和所述第二容置腔之间相互连通。
进一步地，至少部分所述正极组件设于所述第二板体内侧，所述正极组件包括正极柱和外绝缘件，所述外绝缘件隔开所述正极柱与所述第二板体。
进一步地，所述正极柱包括柱体和连接在柱体的端部的第一片体；所述外绝缘件环设于所述柱体外部，且部分嵌入所述第二板体内；所述外绝缘件包括环体和与所述环体连接的套部，所述套部套设于所述柱体外部，且穿设在所述第二板体内，所述环体上还开设有容置所述第一片体的限位槽，所述第一片体露于所述第二板体外。
进一步地，所述正极组件还包括内绝缘件，所述内绝缘件隔开所述正极柱与所述盖板。
进一步地，所述内绝缘件隔开所述正极柱与所述第二板体；所述内绝缘件包括相对设置的第一臂部和第二臂部，所述正极柱至少部分位于所述第一臂部和所述第二臂部之间。
进一步地，所述第一臂部与所述第二板体贴合，所述第二臂部与所述盖板贴合；所述正极柱包括第二片体，所述第一片体和所述第二片体分别位于所述柱体的两端，所述第二片体位于所述第一臂部和所述第二臂部之间，所述柱体穿过所述第二板体并延伸至所述第二板体外部。
进一步地，所述第一臂部和所述第二臂部的连接处开设有凹槽，所述第一臂部和所述第二臂部通过所述凹槽折叠呈相对设置。
进一步地，所述内绝缘件在自由状态下，所述第一臂部与所述第二臂部之 间夹角为0-180°或0-90°。
进一步地，所述凹槽包括槽底面以及连接在所述槽底面与所述第一臂部或所述第二臂部之间的连接面；所述槽底面呈弧形、矩形、带有倒角的梯形或带有倒角的矩形，所述连接面呈弧面、平面或斜面。
进一步地，其还包括与所述第二板体导电连接的负极组件，所述负极组件包括与所述第二板体相连的连接片。
进一步地，所述第二板体为单个独立的部件或由多个部件组成。
进一步地，所述第二板体包括第一部分和第二部分，所述第一部分与所述第二部分之间通过连接部连接，所述第一部分和所述第二部分形成阶梯结构，所述正极组件和所述负极组件分别设置于所述第一部分和所述第二部分上。
第二方面，本发明还提出了一种电池，包括上述所述的电池壳体和设置在所述电池壳体的第一容置腔内的电芯。
第三方面，本发明还提出了一种电子设备，包括上述所述的电池壳体；或者包括上述所述的电池。
与现有技术相比，本发明具有以下优点：
本发明的电池壳体，通过底板和环设在底板外周的周侧板相连形成一端开口的容置腔，将底板分成第一板体、第二板体以及连接在第一板体和第二板体之间的连接板体三个部分，将正极组件设置在第二板体上，一方面可以自由安装控制正极组件的第二板体的宽度，另一方面在安装方向上也不存在其余部件的阻碍，方便了正极组件的安装操作，降低了对封装工艺的要求，从而大大提高了生产效率和产品合格率。
附图说明
在此描述的附图仅用于解释目的，而不意图以任何方式来限制本发明公开的范围。另外，图中的各部件的形状和比例尺寸等仅为示意性的，用于帮助对本发明的理解，并不是具体限定本发明各部件的形状和比例尺寸。本领域的技术人员在本发明的教导下，可以根据具体情况选择各种可能的形状和比例尺寸来实施本发明。在附图中：
图1是本发明中一种实施例的电池壳体的结构示意图；
图2是本发明中一种电池壳体的另一实施例结构示意图；
图3是本发明中一种实施例的电池壳体的剖视图；
图4是图3中A处的局部放大图；
图5是本发明中一种实施例的电池壳体的爆炸图；
图6是本发明中一种实施例的正极组件的爆炸图；
图7是本发明中一种电池壳体的另一实施例的剖视图；
图8是图7中B处的局部放大图；
图9是本发明中一种电池壳体的另一实施例的爆炸图；
图10是本发明中一种正极组件的另一实施例的爆炸图；
图11是本发明中一种实施例的内绝缘件的结构示意图；
图12是本发明中内绝缘件的另一实施例的结构示意图；
图13是本发明中内绝缘件的另一实施例的结构示意图；
图14是本发明中内绝缘件的另一实施例的结构示意图；
图15是本发明中内绝缘件的另一实施例的结构示意图；
图16是本发明中内绝缘件的另一实施例的结构示意图；
图17是本发明中内绝缘件的另一实施例的结构示意图；
图18是本发明中内绝缘件的另一实施例的结构示意图；
图19是本发明中一种实施例的底板和周侧板的结构示意图；
图20是本发明中底板和周侧板的另一实施例的结构示意图；
图21是本发明中一种实施例的电池的剖视图；
图22是是本发明中一种实施例的电池的爆炸图。
具体实施方式
为了使本技术领域的人员更好地理解本发明中的技术方案，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的前提下 所获得的所有其他实施例，都应当属于本发明保护的范围。
需要说明的是，当元件被称为“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施例。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
如图1至图3所示，本发明公开了一种电池壳体，包括底板1、周侧板2以及电极组件。
底板1具有第一板体101、第二板体102以及连接在第一板体101和第二板体102之间的连接板体103。本实施例中，第一板体101与第二板体102之间形成阶梯结构。
周侧板2环设在底板1外周，并与底板1连接形成一端开口201的容置腔。
电极组件，包括设于第二板体102上的正极组件4。
通过底板1和环设在底板1外周的周侧板2相连形成一端开口的容置腔，将底板1分成第一板体101、第二板体102以及连接在第一板体101和第二板体102之间的连接板体103三个部分，将正极组件4设置在第二板体102上，一方面可以自由控制安装正极组件4的第二板体102的宽度和面积，另一方面在安装方向上也不存在其余部件的阻碍，方便了正极组件4的安装操作，降低了对封装工艺的要求，从而大大提高了生产效率和产品合格率。
如图3至图5所示，电池壳体还包括与开口201相连的盖板3，盖板3与第一板体101和第二板体102相对设置，且封住容置腔，使容置腔形成密闭腔，可以理解的是，盖板3位于底板1的相对侧。
底板1和盖板3均采用金属或合金材料制成，合金材料优选为不锈钢。优选地，本实施例中，底板1和盖板3均采用可导电的不锈钢材质。如图1和图2所示， 底板1包括第一板体101、第二板体102以及连接在第一板体101和第二板体102之间的连接板体103，第一板体101和第二板体102的形状不限，可以是长方形、L形、T形、圆形，工字形等。在一些实施例中，如图1所示，第一板体101和第二板体102均为长方形，在另一些实施例中，如图2所示，第一板体101和第二板体102的自由端均设置有缺口104，方便后续的装配固定。第一板体101与第二板体102不处于同一水平位置，优选的，第一板体101与第二板体102平行设置，呈阶梯结构，并且其中第二板体12靠近开口201设置，可以理解的是，如图3和图19所示，第一板体101与盖板3之间的距离H1大于第二板体102与盖板3之间的距离H2。第一板体101与盖板3之间形成用于放置电芯的第一容置腔202，第二板体102与盖板3之间形成用于放置正极组件4的第二容置腔203，第一容置腔202和第二容置腔203相互连通形成容置腔。
作为一种优选的实施方式，如图4、图5和图19所示，为了便于盖板3的安装，周侧板2的自由端向外延伸有法兰边204，优选的法兰边204与第一板体101或第二板体102平行设置，且向远离容置腔方向水平延伸。盖板3采用焊接后点胶的方式与法兰边204相连，从而密封容置腔。
图3和图4所示，至少部分正极组件4设于第二板体102内侧，在一些实施例中，如图4所示，正极组件4包括正极柱401和外绝缘件402，外绝缘件402隔开正极柱401与第二板体102。本实施例中，正极柱401与外绝缘件402采用铆接的方式与第二板体102固定，由正极柱401有效固定外绝缘件402的位置。
如图4所示，正极组件4设于第二板体102，且正极组件4部分设于第二容置腔203内，部分露于电池壳体外。正极组件4包括正极柱401、外绝缘件402和导电片404，本实施例中，正极柱401和导电片404均采用铝材料制成。其中，正极柱401包括柱体4011和连接在柱体4011两端的第一片体4012和第二片体4013，本实施例中，如图6所示，柱体4011的截面形状为圆形，第一片体4012的截面形状为矩形，第二片体4013的截面形状为圆形，第一片体4012的尺寸大于第二片体4013，第二片体4013的直径大于柱体4011的直径。第二板体102上开设有对应于柱体4011的第一避让孔1021，外绝缘件402上开设有对应于柱体4011的第二避让孔4021，导电片404上开设有对应于柱体4011的第四避让孔4041，柱 体4011依次穿过第二避让孔4021、第一避让孔1021和第四避让孔4041，第一片体4012设置在第二避让孔4021外侧且远离第二容置腔203的一端(即露于电池壳体外)，第二片体4013设置在第四避让孔4041外侧且靠近第二容置腔203的一端(即设置在第二容置腔203内)。
本实施例中，如图4所示，外绝缘件402位于第二板体102的外侧，环设于柱体4011外部，且部分嵌入第二板体102内。如图4和图6所示，外绝缘件402包括开设有第二避让孔4021的环体4022和沿着第二避让孔4021的轴线延伸的套部4023，套部4023穿设在第二板体102上，环体4022上还开设有容置第一片体4012的限位槽4024，第一片体4012露于第二板体102外，限位槽4024与第二避让孔4021相连通，环体4022和套部4023通过第二避让孔4021环设于柱体4011的外部，且套部4023部分嵌入第二板体102内。通过外绝缘件402隔绝正极柱401与第二板体102外壁以及第一避让孔4021内壁的接触，使得正极柱401与第二板体102进行绝缘连接，避免出现短路的现象。
可以理解的是，由于第二板体102与盖板3之间的距离(即第二容置腔203的高度)较短，在加工误差、装配误差以及壳体变形等因素的影响下，可能会导致正极组件4位于第二板体102内侧的一端与盖板3接触到，从而造成短路的现象，对电池的正常工作造成不利影响。因此，在一些实施例中，如图7至图10所示，正极组件4还包括内绝缘件403，由内绝缘件403隔开正极柱401与盖板3。本实施例中，正极柱401与内绝缘件403采用铆接的方式固定，由正极柱401有效固定内绝缘件403的位置。
至少部分盖板3与第二板体102相对设置，由内绝缘件403隔开正极柱401与盖板3，避免了正极柱401触碰到盖板3而产生的短路现象，能够同时对第二板体102和盖板3进行绝缘。
如图8所示，外绝缘件402大部分位于第二板体102的外侧，内绝缘件403位于第二板体102的内侧，由外绝缘件402隔开正极柱401与第二板体102，由内绝缘件403隔开正极柱401与第二板体102和盖板3，通过外绝缘件402和内绝缘件403的配合使用使得正极柱401与第二板体102进行绝缘连接，同时通过内绝缘件403隔开正极柱401与盖板3，避免了正极柱401触碰到盖板3而产生的短路现 象。
作为一种优选的实施方式，如图10至图18所示，内绝缘件403包括相对设置的第一臂部4031和第二臂部4032，如图8所示，正极柱401至少部分位于第一臂部4031和第二臂部4032之间，且第一臂部4031和第二臂部4032连接处位置开设有凹槽4033。本实施例中，内绝缘件403采用高分子材料制成，优选为硅胶或塑料材料，具有良好的绝缘性以及弹性。由内绝缘件403自身的弹性，第一臂部4031和第二臂部4032可通过凹槽4033折叠呈相对设置。
如图11至图14所示，优选的，内绝缘件403在自由状态下，第一臂部4031与第二臂部4032之间夹角为0-180°；如图15至图18所示，更优选的，内绝缘件403在自由状态下，第一臂部4031与第二臂部4032之间夹角为0-90°。如图8至图10所示，内绝缘件403在使用状态下，第一臂部4031和第二臂部4032通过凹槽4033折叠呈上下相对设置。通过第一臂部4031或第二臂部4032能够有效覆盖正极柱401与盖板3之间的空间，防止正极柱401触碰到盖板3。
凹槽4033包括槽底面4034以及连接在槽底面4034与第一臂部4031或第二臂部4032之间的连接面4035，槽底面4034呈弧形、矩形、梯形、带有倒角的梯形或带有倒角的矩形，连接面4035呈弧面、平面或斜面。
进一步地，如图11至图14所示，，内绝缘件403在自由状态下，第一臂部4031与第二臂部4032之间夹角为180°。在一些实施例中，如图11所示，槽底面4034的截面形状呈弧形，连接面4035呈弧面；在另一些实施例中，如图12所示，槽底面4034的截面形状呈矩形，连接面4035呈弧面；在另一些实施例中，如图13所示，槽底面4034的截面形状呈带有倒角的梯形，连接面4035呈弧面；在另一些实施例中，如图14所示，槽底面4034的截面形状呈带有倒角的矩形，连接面4035呈平面。
进一步的，如图15至图18所示，内绝缘件403在自由状态下，第一臂部4031与第二臂部4032之间夹角为90°；在一些实施例中，如图15所示，槽底面4034的截面形状呈弧形，连接面4035呈弧面；在另一些实施例中，如图16所示，槽底面4034的截面形状呈矩形，连接面4035呈弧面；在另一些实施例中，如图17所示，槽底面4034的截面形状呈带有倒角的梯形，连接面4035呈斜面；在另一 些实施例中，如图18所示，槽底面4034的截面形状呈带有倒角的矩形，连接面4035呈斜面。
本实施例中，槽底面4034的截面形状不限，通过凹槽4033的结构使得第一臂部4031和第二臂部4032之间更容易折叠，且折叠处形成空隙，防止折叠后的第一臂部4031与第二臂部4032的连接端相互抵触，使其两者之间留有间距，方便正极柱401的安装定位。
第一臂部4031和第二臂部4032自由端的侧壁4036为弧面、斜面或弧面与斜面的组合，可以进一步防止折叠后的第一臂部4031与第二臂部4032的自由端相互抵触，设计合理。
如图8所示，正极组件4设于第二板体102，且正极组件4部分设于第二容置腔203内，部分露于电池壳体外。本实施例中，如图10所示，内绝缘件403上开设有对应于柱体4011的第三避让孔4037，柱体4011依次穿过第二避让孔4021、第一避让孔1021、第三避让孔4037和第四避让孔4041，第一片体4012设置在第二避让孔4021外侧且远离第二容置腔203的一端(即露于电池壳体外)，第二片体4013设置在第四避让孔4041外侧且靠近第二容置腔203的一端(即设置在第二容置腔203内)。
第三避让孔4037开设在内绝缘件403的第一臂部4031或第二臂部4032上，本实施例以第三避让孔4037开设在第一臂部4031上为例，外绝缘件402的套部4023穿过第二板体102的第一避让孔4021内并部分嵌设在第一臂部4031的第三避让孔4037内，当然套部4023也可以无需嵌入第一臂部4031内，其穿过第一避让孔1021可直接抵接于第一臂部4031外侧。第一臂部4031通过第三避让孔4037环设于柱体4011的外部，由于第一臂部4031与正极柱401采用铆接的方式固定，故使得第一臂部4031与第二板体102固定贴合，通过内绝缘件403的第一臂部4031隔绝正极柱401与第二板体102内壁的接触。导电片404通过第四避让孔4041环设于柱体4011的外部，导电片404位于第一臂部4031和第二臂部4032之间，且正极柱401的第二片体4013位于导电片404的外侧，由于第一臂部4031与正极柱401采用铆接的方式固定，使得第二臂部4032可直接弹性抵接在盖板3内侧，减省了对第二臂部4032固定工序，当然也可以采用胶粘的方式将第二 臂部4032与盖板3贴合，由内绝缘件403的第二臂部4032隔绝正极柱401的第二片体4013与盖板3的碰撞，防止短路。当电池壳体使用时，电芯与导电片404导电相连，导电片404的长度和面积可以视情况做大，以便于与电芯连接。
如图1、图2、图5和图9所示，电极组件还包括与第二板体102导电连接的负极组件5，本实施例中，负极组件5包括与第二板体102相连的连接片，该连接片采用镍材料制成，负极组件5设于第二板体102的外部，当电池壳体使用时，电芯只需与第二板体102相连即可与负极组件5导电相连。
本实施例中，如图5和图9所示，第二板体102上还设有供电解液(图未视)进入容置腔的注液孔1022，注液孔1022安装有过盈配合的堵液塞6，该堵液塞6的材质为不锈钢。注液孔1022设于第二板体102上并位于靠近负极组件5的一边，通过注液孔1022方便向容置腔内填充电解液。
进一步的，第二板体102为单个独立的部件或由多个部件组成。在一些实施例中，如图1、图2、图5、图9和图19所示，第二板体102为单个独立的部件，在另一些实施例中，第二板体102由多个部件组成。如图20所示，在另一些实施例中，第二板体102包括第一部分1023和第二部分1024，第一部分1023与第二部分1024之间通过连接部1025连接，第二部分1024高于第一部分1023，第一部分1023和第二部分1024形成阶梯结构。使用该结构后，正极组件4设于第一部分1023，负极组件5和注液孔1022设于第二部分1024。可以理解的是，第一部分1021和第二部分1022形成阶梯结构，使得后续电极组件采用激光焊接时，方便激光光源发射后取点，同时方便后续的装配。另外，也可以设置成第一部分1023高于第二部分1024。
第二方面，如图21和图22所示，本申请还提出了一种电池，包括如上述结构的电池壳体和设置在电池壳体的第一容置腔202内的电芯7，电芯7与正极组件4的导电片404导电相连。同时，电池壳体的容置腔内可以填充有电解液，通过电解液使得正极组件4与负极组件5之间起到传导离子的作用，使得电池获得高电压、高比能等优点的保证。
作为一种优选的实施方式，电芯7的形状与第一容置腔202的截面形状相对应。
第三方面，本发明还提出一种电子设备，应用有上述结构的电池壳体；或者上述结构的电池。
应该理解，以上描述是为了进行图示说明而不是为了进行限制。通过阅读上述描述，在所提供的示例之外的许多实施例和许多应用对本领域技术人员来说都将是显而易见的。因此，本教导的范围不应该参照上述描述来确定，而是应该参照前述权利要求以及这些权利要求所拥有的等价物的全部范围来确定。出于全面之目的，所有文章和参考包括专利申请和公告的公开都通过参考结合在本文中。在前述权利要求中省略这里公开的主题的任何方面并不是为了放弃该柱体内容，也不应该认为申请人没有将该主题考虑为所公开的发明主题的一部分。

Claims (17)

  1. 一种电池壳体，其特征在于，包括：
    底板，具有第一板体、第二板体以及连接在所述第一板体和所述第二板体之间的连接板体；
    周侧板，环设在所述底板外周、并与所述底板连接形成一端开口的容置腔；以及，
    正极组件，设于所述第二板体。
  2. 根据权利要求1所述的电池壳体，其特征在于，所述电池壳体还包括与所述开口相连的盖板，所述盖板与所述第一板体和所述第二板体相对设置，且封住所述容置腔。
  3. 根据权利要求2所述的电池壳体，其特征在于，所述周侧板的自由端向外延伸有法兰边，所述盖板与所述法兰边相连，所述第一板体与所述盖板之间的距离大于所述第二板体与所述盖板之间的距离。
  4. 根据权利要求3所述的电池壳体，其特征在于，所述容置腔包括形成在所述盖板和所述第一板体之间的第一容置腔和形成在所述盖板和所述第二板体之间的第二容置腔，所述第一容置腔和所述第二容置腔之间相互连通。
  5. 根据权利要求4所述的电池壳体，其特征在于，至少部分所述正极组件设于所述第二板体内侧，所述正极组件包括正极柱和外绝缘件，所述外绝缘件隔开所述正极柱与所述第二板体。
  6. 根据权利要求5所述的电池壳体，其特征在于，所述正极柱包括柱体和连接在柱体的端部的第一片体；所述外绝缘件环设于所述柱体外部，且部分嵌入所述第二板体内；所述外绝缘件包括环体和与所述环体连接的套部，所述套部套设于所述柱体外部，且穿设在所述第二板体内，所述环体上还开设有容置所述第一片体的限位槽，所述第一片体露于所述第二板体外。
  7. 根据权利要求6所述的电池壳体，其特征在于，所述正极组件还包括内绝缘件，所述内绝缘件隔开所述正极柱与所述盖板。
  8. 根据权利要求7所述的电池壳体，其特征在于，所述内绝缘件隔开所述正极柱与所述第二板体；所述内绝缘件包括相对设置的第一臂部和第二臂部， 所述正极柱至少部分位于所述第一臂部和所述第二臂部之间。
  9. 根据权利要求8所述的电池壳体，其特征在于，所述第一臂部与所述第二板体贴合，所述第二臂部与所述盖板贴合；所述正极柱包括第二片体，所述第一片体和所述第二片体分别位于所述柱体的两端，所述第二片体位于所述第一臂部和所述第二臂部之间，所述柱体穿过所述第二板体并延伸至所述第二板体外部。
  10. 根据权利要求8所述的电池壳体，其特征在于，所述第一臂部和所述第二臂部的连接处开设有凹槽，所述第一臂部和所述第二臂部通过所述凹槽折叠呈相对设置。
  11. 根据权利要求10所述的电池壳体，其特征在于，所述内绝缘件在自由状态下，所述第一臂部与所述第二臂部之间夹角为0-180°或0-90°。
  12. 根据权利要求11所述的电池壳体，其特征在于，所述凹槽包括槽底面以及连接在所述槽底面与所述第一臂部或所述第二臂部之间的连接面；所述槽底面呈弧形、矩形、带有倒角的梯形或带有倒角的矩形，所述连接面呈弧面、平面或斜面。
  13. 根据权利要求1-12任一项所述的电池壳体，其特征在于，其还包括与所述第二板体导电连接的负极组件，所述负极组件包括与所述第二板体相连的连接片。
  14. 根据权利要求13所述的电池壳体，其特征在于，所述第二板体为单个独立的部件或由多个部件组成。
  15. 根据权利要求14所述的电池壳体，其特征在于，所述第二板体包括第一部分和第二部分，所述第一部分与所述第二部分之间通过连接部连接，所述第一部分和所述第二部分形成阶梯结构，所述正极组件和所述负极组件分别设置于所述第一部分和所述第二部分上。
  16. 一种电池，其特征在于，包括如权利要求1-15任一项所述的电池壳体和设置在所述电池壳体的第一容置腔内的电芯。
  17. 一种电子设备，其特征在于，包括如权利要求1-15任一项所述的电池壳体；或者包括如权利要求16所述的电池。
PCT/CN2023/106354 2023-03-15 2023-07-07 电池壳体、电池及电子设备 Ceased WO2024187648A1 (zh)

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