WO2021135165A1 - Dispositif d'accumulation d'énergie et procédé d'assemblage de dispositif d'accumulation d'énergie - Google Patents

Dispositif d'accumulation d'énergie et procédé d'assemblage de dispositif d'accumulation d'énergie Download PDF

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Publication number
WO2021135165A1
WO2021135165A1 PCT/CN2020/102570 CN2020102570W WO2021135165A1 WO 2021135165 A1 WO2021135165 A1 WO 2021135165A1 CN 2020102570 W CN2020102570 W CN 2020102570W WO 2021135165 A1 WO2021135165 A1 WO 2021135165A1
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WO
WIPO (PCT)
Prior art keywords
energy storage
storage device
electrical connection
conversion element
housing
Prior art date
Application number
PCT/CN2020/102570
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English (en)
Chinese (zh)
Inventor
童焰
陈志勇
Original Assignee
广东微电新能源有限公司
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Filing date
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Application filed by 广东微电新能源有限公司 filed Critical 广东微电新能源有限公司
Publication of WO2021135165A1 publication Critical patent/WO2021135165A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10—Housing; Encapsulation
    • H01G2/103—Sealings, e.g. for lead-in wires; Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/52—Removing gases inside the secondary cell, e.g. by absorption
    • 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
    • H01M50/183—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
    • 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 energy storage devices, and more specifically, the present invention relates to an energy storage device and an assembly method of the energy storage device.
  • the energy storage device includes, for example, a battery, a capacitor, and the like.
  • a battery which is powered by the battery, so as to realize the normal use of the electronic device.
  • the battery used in the electronic product may be, for example, a steel shell battery or a soft pack battery.
  • the existing soft-pack battery usually includes a winding core and two half-shells that are snapped together, and the winding core is assembled into a space surrounded by the two half-shells.
  • the two tabs of the winding core protrude from the edges of the two half shells for electrical connection, which leads to the problem that the battery is more difficult to seal and bend, and it is easy to cause damage to the packaging film and cause liquid leakage. . It may even affect the overall sealing of the battery, resulting in performance degradation such as waterproof and dustproof. If the bare cell in the soft-pack button battery has a winding structure and the lead angle of the tab is unstable, it is more difficult to bend the edges and to realize automated production. After the tabs are bent, heat sealing is performed, which increases the difficulty of sealing, and may also affect the battery space utilization rate and reduce the battery energy density.
  • the steel shell battery Although the assembly process of the steel shell battery is relatively simple, its safety performance is poor. Moreover, the steel shell also has the disadvantages of high weight, small distance between the positive electrode and the negative electrode, and easy short-circuiting.
  • An object of the present invention is to provide a new technical solution for an energy storage device and an assembling method of the energy storage device.
  • an energy storage device including:
  • An energy conversion element having at least one electrical connection portion provided on the surface thereof;
  • a housing the housing includes a conductor layer and at least one insulating layer compounded together, a cavity is formed inside the housing, at least one of the insulating layers is located on one side of the cavity, and is located on the side of the cavity.
  • a hollow structure is provided on the insulating layer, the conductor layer is exposed on the hollow structure to form a contact portion, and the electrical connection portion is connected to the contact portion;
  • the housing includes a first half-shell and a second half-shell that are hermetically connected together, and at least one of the first half-shell and the second half-shell includes a recessed structure and is surrounded by a recessed structure. An edge portion formed by the edge of the structure extending outward; the hollow structure is provided on the recessed structure.
  • the edge portions are welded together by heat melting or ultrasonic.
  • the hollow structure is formed by removing material.
  • the upper and lower sides are folded, and the edge portion is folded toward the side wall of the housing.
  • the material of the insulating layer is plastic.
  • the conductor layer includes an inner surface on one side of the cavity and an outer surface opposite to the inner surface.
  • the insulating layer is compounded on both the inner surface and the outer surface. Corresponding positions of the insulating layer all form the hollow structure.
  • the energy conversion element includes an energy conversion element body and the electrical connection part mechanically connected to the energy storage element body, or the electrical connection part is a part of the energy storage element body extending on its surface .
  • the energy conversion element is a wound bare cell or a laminated bare cell.
  • the electrical connection part is welded to the inner surface of the contact part
  • the welding spot or welding pass passes through the contact part from the outside of the housing;
  • solder joints or weld beads gradually spread to the surroundings from the contact surface of the contact portion and the electrical connection portion.
  • the energy storage device is a soft pack battery.
  • an assembling method of an energy storage device comprising:
  • An energy conversion element having at least one electrical connection portion provided on the surface thereof;
  • a housing the housing includes a conductor layer and at least one insulating layer compounded together, a cavity is formed inside the housing, at least one of the insulating layers is located on one side of the cavity, and is located on the side of the cavity.
  • a hollow structure is provided on the insulating layer, and the conductor layer is exposed on the hollow structure to form a contact portion;
  • the assembly method includes:
  • the shell is closed.
  • the electrical connection part is separated from the contact part.
  • the energy storage device there is no need to extend the electrical connection part from the edges of the two half-shells, so that the two half-shells can form a good sealed connection.
  • the conductor layer of the shell is exposed from the hollow structure, so that the internal energy conversion element can be directly electrically connected to the outside through the conductor layer of the shell, which simplifies the structure of the energy storage device , To avoid the problem that the battery edge is more difficult to bend and bend due to the lead out of the electrical connection part.
  • the steel shell battery welding technology can be used, and the battery shell can take into account the characteristics of the soft pack battery shell, and the battery has a significant improvement in safety and assembly process.
  • the technical task to be achieved or the technical problem to be solved by the present invention is never thought of or unexpected by those skilled in the art, so the present invention is a new technical solution.
  • Fig. 1 is a perspective view of an energy storage device provided according to an embodiment of the present disclosure.
  • Fig. 2 is a side view of Fig. 1.
  • Fig. 3 is a perspective view of an energy storage device provided according to another embodiment of the present disclosure.
  • Fig. 4 is a top view of Fig. 3.
  • Fig. 5 is a structural exploded view of an energy storage device provided according to an embodiment of the present disclosure.
  • Fig. 6 is a side view of Fig. 5.
  • Fig. 7 is a schematic structural diagram of an energy storage device provided according to an embodiment of the present disclosure.
  • Fig. 8 is a cross-sectional view of an energy storage device provided according to an embodiment of the present disclosure.
  • an energy storage device may be, for example, a battery or a capacitor.
  • the energy storage device may be a soft pack battery, or of course, it may also be a steel shell battery.
  • the battery may be a primary battery or a secondary battery.
  • the energy storage device provided by the embodiment of the present invention can be applied to a variety of different types of electronic equipment, and can be used to supply power to the electronic equipment, so as to realize the normal use of the electronic equipment.
  • An energy storage device provided by an embodiment of the present invention, as shown in FIGS. 1 to 8, includes an energy conversion element 3 and a casing 1. Wherein, the energy conversion element 3 has at least one electrical connection portion 31 provided on the surface thereof.
  • the housing 1 includes a conductor layer 14 and at least one insulating layer 15 that are compounded together. A cavity is formed inside the housing 1, and at least one insulating layer 15 is located on one side of the cavity. A hollow structure 2 is provided on the insulating layer 15 on the side, and the conductor layer 14 is exposed on the hollow structure 2 to form a contact portion, and the electrical connection portion 31 is connected to the contact portion.
  • the housing 1 includes a first half-shell 11 and a second half-shell 12 that are hermetically connected together, and at least one of the first half-shell 11 and the second half-shell 12 includes a recess The structure and an edge portion 13 formed by extending outwardly from the edge of the recessed structure; the hollow structure 2 is provided on the recessed structure.
  • the energy storage device provided by the embodiment of the present invention does not require the electrical connection portion 31 on the energy conversion element 3 to be led out from the edges of the first half-shell 11 and the second half-shell 12, which overcomes the existing problems in the prior art. It is difficult to bend the edges of the battery case.
  • This design also facilitates the formation of a good sealing connection between the first half-shell 11 and the second half-shell 12, which can improve the waterproof and dustproof performance of the entire housing 1 and avoid adverse effects on the internal energy conversion element 3.
  • the housing 1 is designed as a composite layer structure including a conductor layer 14 and an insulating layer 15, and a hollow structure 2 is provided on the insulating layer 15 so that the conductor layer 14 can be exposed in the hollow
  • the structure 2 is used to form a contact portion, so that the internal energy conversion element 3 can be electrically connected to the outside through the conductor layer 14 exposed in the hollow structure 2.
  • the energy storage device provided by the embodiment of the present invention has a simpler structure, is more convenient to manufacture, and can meet good sealing requirements.
  • a heat isolation layer is further provided between the energy conversion element 3 and the electrical connection portion 31.
  • the heat isolation layer can function to isolate heat.
  • the portion of the conductor layer 14 exposed from the hollow structure 2, that is, the contact portion can be connected to the electrical connection portion 31 of the energy conversion element 3 by welding. together.
  • the design of providing a heat isolation layer between the energy conversion element 3 and the electrical connection portion 31 can effectively prevent the heat generated during welding from being directly conducted to the energy conversion element 3, thereby causing damage to the energy conversion element 3.
  • the energy storage device is, for example, a soft pack battery
  • the energy conversion element 3 is, for example, a bare cell in the battery
  • the electrical connection portion 31 is, for example, a tab or an electrode sheet that is not covered by electrode active material. Area.
  • the solder joint or bead passes through the conductor layer 14 from the outside of the housing 1.
  • the welding pins are located on the outside of the housing 1 instead of on the side of the recessed structure. In this way, the housing 1 does not need to leave space for welding, for example, laser welding is used for welding.
  • the weld bead or spot gradually spreads inward from the outer surface of the conductor layer 14 to the electrical connection portion 31, and the two are melted and connected together.
  • solder joints or beads gradually spread to the surrounding from the contact surface of the conductor layer 14 and the electrical connection portion 31.
  • the solder pins are also located on the outside of the housing 1. The solder pins abut the conductor layer 14.
  • the current reaches the contact surface. Since there is a gap between the conductor layer 14 and the electrical connection portion 31 at the contact surface, a resistance can be formed. Under the action of the current, the contact surface gradually melts, and the conductor layer 14 and the electrical connection portion 31 are connected together.
  • Both of the above two welding methods can form an effective connection between the conductor layer 14 and the electrical connection portion 31.
  • steel shell battery welding technology can be used for welding the electrical connection part 31 of the energy conversion element 3, and the battery shell 1 can take into account the characteristics of the soft pack battery shell, so that the battery has a significant improvement in safety and assembly process. .
  • the conductive layer 14 of the housing 1 and the electrical connection portion 31 of the energy conversion element 3 can also be connected through atmospheric pressure.
  • atmospheric pressure By adopting the atmospheric pressure method, there is no need to use a welding process, and atmospheric pressure can be used to compress the conductor layer 14 so that the conductor layer 14 and the electrical connection portion 31 can be tightly combined to achieve good contact and conduction between the two.
  • the energy storage device provided by the embodiment of the present invention is shown in FIGS. 1-3 and 5-7.
  • the housing 1 includes a first half-shell 11 and a second half-shell 12, and the first half-shell Both the body 11 and the second half-shell 12 have open ends.
  • the first half-shell 11 and the second half-shell 12, for example, can be buckled together with the open ends facing each other and sealedly connected.
  • the first half-shell 11 and the second half-shell 12 are jointly enclosed to form Containment cavity.
  • the energy conversion element 3 in the energy storage device is accommodated in the accommodation cavity.
  • the first half shell 11 and the second half shell 12 can seal the energy conversion element 3 as a whole, so as to protect the energy conversion element 3, and can play the role of waterproof and dustproof.
  • the energy conversion element 3 is, for example, a bare cell.
  • the energy conversion element 3 may be, but is not limited to, a lithium ion bare cell, a lithium metal bare cell, etc., of course, may also be other types of bare cells known to those skilled in the art.
  • the housing 1 has, for example, a rectangular parallelepiped structure, a cylindrical structure, an elliptical cylindrical structure, or the like. Those skilled in the art can make settings according to actual needs.
  • the housing 1 includes a conductor layer 14 and at least one insulating layer 15 that are compounded together.
  • the conductor layer 14 may be, for example, a metal material such as an aluminum alloy material, a copper alloy material, or a stainless steel material.
  • the material of the insulating layer 15 is, for example, a plastic material. Those skilled in the art can make adjustments flexibly according to specific needs, and there is no restriction on this.
  • the material of the housing 1 is a metal-plastic composite film.
  • the conductor layer 14 is usually a metal material, which can be used to improve the strength of the entire casing 1. Since the surface of the metal material is relatively dense and the surface gap is small, it can play a good role in dustproof and waterproof, and it can also effectively prevent the electrolyte from leaking out of the energy storage device. At the same time, the conductor layer 14 has conductivity, and the internal energy conversion element 3 can be electrically connected to the outside through the conductor layer 14, without the electrical connection portion 31 of the energy conversion element 3 being led out of the housing 1 to affect the housing 1. The tightness of the seal, and lead to difficulties in bending the sealing edge.
  • the insulating layer 15 is made of a non-conductive material, which is equivalent to providing an insulating film between the electrical connection portion 31 of the energy conversion element 3 and the housing 1 during use, which can avoid the occurrence of a short circuit.
  • the conductor layer 14 includes an inner surface on one side of the cavity and an outer surface opposite to the inner surface.
  • the outer surface is compounded with the insulating layer 15, and the hollow structure 2 is formed at the corresponding positions of the two insulating layers 15. That is, the conductor layer 14 is located in the middle, and insulating layers 15 are respectively provided on the two surfaces of the conductor layer 14.
  • the hollow structure 2 needs to be formed on both insulating layers 15 to expose the conductive layer 14 to form a contact portion, so that the internal energy conversion element 3 can be electrically connected to the outside through the contact portion.
  • the hollow structure 2 formed on the inner surface of the conductor layer 14 may be located directly above the electrical connection portion 31 on the energy conversion element 3 to facilitate the contact and conduction with the electrical connection portion 31.
  • the specific position of the hollow structure 2 formed on the outer surface of the layer 14 can be flexibly adjusted according to actual needs.
  • the insulating layer 15 is combined with the conductive layer 14 by injection molding or bonding, so that the conductive layer 14 and the insulating layer 15 can be combined together well.
  • the hollow structure 2 is formed on the insulating layer 15 by removing material.
  • the shell 1 adopts a metal-plastic composite film, and the metal-material composite film is first stamped and formed, and then squeegee treatment is performed on the plastic layer to form the hollow at a suitable position.
  • Structure 2 the metal-material composite film is first stamped and formed, and then squeegee treatment is performed on the plastic layer to form the hollow at a suitable position.
  • the shell 1 adopts a metal-plastic composite film, and the plastic layer of the metal-plastic composite film can be squeegeed first to form the hollow structure 2, and then the metal-plastic composite film The composite film is stamped and formed to form the housing 1.
  • edge portion 13 of the first half-shell 11 and the edge portion 13 of the second half-shell 12 are connected in a sealed manner to form a sealed edge, and a part of the sealed edge is bent toward the first side of the shell , And the other part is bent toward the second side of the housing in a direction opposite to the first side.
  • a part of the sealing edge is bent toward the first side, and another part is bent toward the second side, instead of being bent toward one side as a whole. In this way, the rebounding forces of the bending on both sides can cancel each other, thereby preventing the sealing edge from separating from the side wall of the housing 1.
  • the sealing edge can be evenly attached to the outer surface of the housing 1 without forming wrinkles.
  • the surface of the energy storage device is flat.
  • the sealing edge has a set distance from the outer surface of the housing 1 after bending, instead of being attached to the outer surface.
  • edge portion 13 of the first half-shell 11 and the edge portion 13 of the second half-shell 12 may be welded together, for example, by heat melting or ultrasonic.
  • the edge portions 13 of the two half-shells are made of plastic material.
  • the edge 13 of one half-shell is made of transparent plastic
  • the edge 13 of the other half-shell is made of colored plastic, such as black plastic, green plastic, or red plastic.
  • bumps are provided on the inner surface of the hollow structure 2 and/or the contact portion of the electrical connection portion 31.
  • a plurality of bumps are provided on the inner surface of the hollow structure 2 and the plurality of bumps are distributed in a matrix.
  • the bumps first contact the electrical connection portion 31. Due to atmospheric pressure, pits are formed on the electrical connection portion 31.
  • the matching of the bumps and the pits can effectively prevent the hollow structure 2 from moving relative to the electrical connection portion 31. This method is equivalent to directly contacting the hollow structure 2 with the electrical connection portion 31 on the energy conversion element 3, and the contact connection method is relatively simple.
  • the bumps can increase the contact area of the two, and the hollow structure 2 and the electrical connection portion 31 are in contact in space, not only in the plane. . This makes the electrical connection between the two more stable.
  • the energy conversion element 3 of the present invention has a structure as follows: as shown in FIG. 2, it includes an energy conversion element body and the electrical connection portion 31 mechanically connected to the energy storage element body, or the electrical connection portion 31 is The part where the energy storage element body extends on its surface.
  • the electrical connection portion 31 is electrically connected to the outside through the conductor layer 14, so there is no need to lead the electrical connection portion 31 out from the edges of the first half-shell 11 and the second half-shell 12, which overcomes the existing Defects in technology.
  • the energy storage device provided by the present invention may be, for example, a soft pack battery, or of course, may also be a steel shell battery.
  • the energy conversion element 3 is a bare cell, which may be a wound bare cell or a laminated bare cell, which is not limited.
  • the wound type bare cell is a whole piece of electrode sheet (for example, the electrode sheet includes a positive electrode sheet, a negative electrode sheet, and a separator between the positive electrode sheet and the negative electrode sheet) wound into a spiral structure.
  • the laminated bare cell, that is, the electrode sheet is divided into a plurality of sheets, and the plurality of sheets are laminated together.
  • a core post 32 is further provided inside the energy conversion element 3. At least part of the core post 32 is opposite to the electrical connection portion 31 (for example, a tab), and the electrical connection portion 31 It is compressed between the conductor layer 14 and the core post 32. Setting the core post 32 at the middle of the energy conversion element 3 can further strengthen the holding force between the conductor layer 14 and the electrical connection portion 31 on the energy conversion element 3, thereby achieving better contact between the two and at the same time
  • the electrical connection part 31 can be protected from the upper and lower pressure to protect the electrical connection part 31.
  • the core post 32 is an insulating material, for example, the material is plastic, ceramic, glass, or the like.
  • the shape of the core column 32 is a column, a square column, an elliptical column, a polygonal column, and the like.
  • the energy conversion element 3 is arranged around the stem 32.
  • Electrical connection parts 31 are provided at both ends of the energy conversion element 3 in the axial direction.
  • the two electrical connection portions 31 abut against the two ends of the stem 32 respectively.
  • the core post 32 can press the electrical connection part 3 together with the conductor layer 14 so that the electrical connection part 3 and the conductor layer 14 can be in good contact and conduction.
  • the energy conversion element 3 has a laminated structure.
  • the stem 32 is perpendicular to the surface of each layer.
  • a core post 32 penetrating each layer is provided in the middle of the energy conversion element 3.
  • the stem 32 can also play a role in supporting the electrical connection portion 31.
  • the energy storage device provided by the embodiment of the present invention may be, for example, a soft pack battery or a steel shell battery.
  • the energy storage device can be used in a variety of electronic equipment.
  • the electronic device may be, but is not limited to, a mobile phone, a tablet computer, a smart watch, a notebook computer, a game console, a walkie-talkie, a headset, an e-book reader, etc.
  • the above-mentioned electronic equipment includes an electronic equipment housing and an energy storage device.
  • a PCB is provided in the housing of the electronic device.
  • the energy storage device is arranged in the electronic housing, and is electrically connected to the electrical equipment in the electronic equipment through the PCB, so as to supply power to the electrical equipment so that the electronic equipment can be used normally.
  • the embodiment of the present invention also provides an assembling method of the energy storage device.
  • the energy storage device includes an energy conversion element 3 and a housing 1.
  • the energy conversion element 3 has at least one electrical connection portion 31 provided on the surface thereof.
  • the housing 1 includes a conductor layer 14 and at least one insulating layer 15 that are compounded together.
  • a cavity is formed inside the housing 1, and at least one insulating layer 15 is located on one side of the cavity.
  • a hollow structure 2 is provided on the insulating layer 15 on the side, and the conductor layer 14 is exposed on the hollow structure 2 to form a contact portion.
  • the energy conversion element 3 is placed in the cavity.
  • the housing 1 is closed to form an energy storage device.
  • the cavity is evacuated, and the conductor layer 14 is pressed against the electrical connection portion 31 of the energy conversion element 3 by using atmospheric pressure.
  • the air pressure in the cavity is less than atmospheric pressure.
  • the conductor layer 14 gradually approaches the electrical connection portion 31, and finally contacts the electrical connection portion 31, and is closely attached to each other.
  • the energy conversion element 3 is electrically connected to the external circuit through the electrical connection portion 31 and the conductor layer 14.
  • the conductor layer 14 is contacted with the electrical connection portion 31 of the energy conversion element 3 using atmospheric pressure. As opposed to using welding to connect the two. In this way, the internal energy conversion element 3 will not be affected by high temperature, thereby maintaining good energy conversion performance.
  • the inside of the casing 1 will gradually expand due to the effect of the internal pressure.
  • the conductor layer 14 may gradually move away from the energy conversion element 3 until it is separated from the electrical connection portion 31. In this way, a disconnection is formed between the conductor layer 14 and the electrical connection portion 31, and the charging and discharging are stopped. In this way, the explosion of the energy storage device can be effectively avoided, and the safety of the use of the energy storage device can be ensured.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

L'invention concerne un dispositif d'accumulation d'énergie et un procédé d'assemblage du dispositif d'accumulation d'énergie. Le dispositif d'accumulation d'énergie comprend un élément de conversion d'énergie et un boîtier ; l'élément de conversion d'énergie est pourvu d'au moins une partie de connexion électrique qui est disposée sur une surface de l'élément de conversion d'énergie ; le boîtier comprend une couche conductrice et au moins une couche isolante, qui sont combinées ensemble, une cavité est formée à l'intérieur du boîtier, ladite couche isolante est positionnée sur un côté de la cavité, une structure creuse est disposée sur la couche isolante positionnée sur un côté de la cavité, la couche conductrice est exposée sur la structure creuse pour former une partie de contact, et la partie de connexion électrique est reliée à la partie de contact ; le boîtier comprend un premier demi-corps de boîtier et un second demi-corps de boîtier, qui sont reliés l'un à l'autre de manière étanche, et le premier demi-corps de boîtier et/ou le second demi-corps de boîtier comprend une structure concave et une partie de bord périphérique, qui est formée par le bord de la structure concave s'étendant vers l'extérieur ; et la structure creuse est disposée sur la structure concave. Le dispositif d'accumulation d'énergie de la présente invention présente une structure simple, et permet d'obtenir facilement une étanchéité et une flexion de bord.
PCT/CN2020/102570 2019-12-30 2020-07-17 Dispositif d'accumulation d'énergie et procédé d'assemblage de dispositif d'accumulation d'énergie WO2021135165A1 (fr)

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CN201911403033.XA CN111129367A (zh) 2019-12-30 2019-12-30 一种储能装置以及储能装置的组装方法
CN201911403033.X 2019-12-30

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CN111129367A (zh) * 2019-12-30 2020-05-08 广东微电新能源有限公司 一种储能装置以及储能装置的组装方法
CN111509149A (zh) * 2020-06-04 2020-08-07 深圳润丰新能源有限公司 胶囊锂电池及胶囊锂电池的制作方法

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