Contact units for electronic or electrochemical devices

Abstract

To improve battery life, we provide a sealed electrical contact unit having an extremely low water vapor permeability, and a method for manufacturing the electrical contact unit. [Solution] A contact unit (40) for an electronic or electrochemical device such as a battery, used to establish an electrical contact with an external conductive element, wherein the electronic or electrochemical device includes a contact surface defining an electrical connection region (50), and the contact unit (40) includes at least a first layer (41) disposed in the electrical connection region (50) and comprising a material charged with electrically conductive particles, preferably a polymer resin filled with electrically conductive particles and / or a material obtained by sol-gel treatment, more preferably a polymer resin filled with graphite.

Description

[Technical Field]

[0001] The present invention relates to an electrical contact unit for an electronic or electrochemical device, and more specifically This relates to an electrical contact unit for a battery. More specifically, this invention relates to such a contact unit. New technologies that improve the lifespan of electronic or electrochemical devices, including contact units. The present invention relates to a method for manufacturing such contact units having a complex structure. It can be applied to ion batteries. [Background technology]

[0002] Some types of electronic or electrochemical devices, such as batteries, are extremely susceptible to moisture. It is known that lithium-ion batteries are a prime example of batteries that are particularly susceptible to moisture. In the case of batteries, lithium spontaneously reacts with water to form lithium hydroxide. The amount of lithium that cannot be used for energy storage will degrade prematurely, reducing the battery's capacity. Therefore, during the manufacturing of batteries, it is necessary to take the utmost care to ensure that they are kept completely dehydrated. Yes. Similarly, to guarantee its lifespan over time, it causes a loss of new battery capacity. The battery is protected from the external environment by an airtight enclosure that prevents water penetration.

[0003] Water permeation in this sealed structure is a well-known phenomenon. The impermeability of the seal is due to the permeability of water vapor. Percentage (water vapor transmission rate in English) This is called the light transmittance (WVTR), and is usually expressed as WVTR (abbreviated). This rate is determined by the material used. It is determined by its manufacturing method and its thickness.

[0004] The quality of the encapsulation is extremely important for lithium-ion batteries. ALD (Atomic Layer Deposition) The deposition technique is particularly good at completely sealing and covering the surface of the battery in a standard manner. This is supported, and is described, for example, in Patent Document 1 (I-TEN). These techniques The technique makes it possible to fabricate defect-free, perfectly conforming thin films. These films are water-resistant. Furthermore, it provides a high level of protection in the battery against the penetration of oxygen molecules, so the electrical contacts Such molecular penetration can still occur only in the portion that passes through the encapsulation, which is a defect of the battery. This is the part that usually determines loss of permeability.

[0005] Metallized films are known and are often used to permanently protect pouch cells from moisture. Generally, in materials of a given thickness, metals are generally extremely airtight against the passage of water molecules. It's not a sex-based material, it's more impermeable than ceramic-based materials, and even more impermeable than polymer-based materials. This makes it possible to create extremely impermeable membranes.

[0006] Furthermore, methods for manufacturing such contact units typically involve electronic components that include them. This may require the use of high heat treatments that could degrade the electrochemical device. , a porous electrode impregnated with an ionic liquid electrolyte and / or lithium ion with an electrolyte This applies to batteries.

[0007] Patent Document 2 (I-TEN) describes a method in which the cathode and the corresponding anode current collectors are visible. In other words, the electrical contact unit in the part that is not coated with an insulating electrolyte The added multilayer lithium-ion battery is described. These electrical contact units are the battery In this configuration, all anodes are electrically connected to each other on one side, and all cathodes are electrically connected to each other on the other side. function like. These electrically connect the surface of the anode and the surface of the corresponding cathode to each other. These electrical contact units are covers having metallic conductivity. They can be made, for example, in the form of a single metal layer of tin, or consist of multiple layers, that is, it can be considered to consist of a first layer of a conductive polymer such as a resin containing silver, a second layer of nickel, and a third layer of tin. In this three-layer composite, the nickel layer protects the polymer layer during the assembly step by welding, and the tin layer provides weldability to the interface of the battery. However, the nickel and tin layers are often porous and do not completely protect the battery against the atmosphere. Furthermore, the silver particles contained in the resin layer are not inert within the operating voltage range of the battery. Additionally, such three-layer composites are more costly to manufacture.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0009] The present invention aims to at least partially overcome some of the difficulties in the above-mentioned prior art.

[0010] The present invention particularly relates to an electrical contact unit that is more cost-effective and more effective, particularly for a battery To improve the lifespan, a sealed electrical contact unit with extremely low water vapor permeability is manufactured. The purpose is to do so.

[0011] Furthermore, the present invention aims to manufacture an electrical contact unit having low internal resistance. Furthermore, the present invention relates to the welding of electronic and electrical components such as micro batteries in electronic circuits. The objective is to fabricate an electrical contact unit that enables the assembly of scientific devices. In particular, it is easy to do without degrading the performance of electronic or electrochemical devices containing them. This makes it possible to manufacture electrical contact units using an easy-to-implement, reliable, and rapid method. The aim is to present methods and electronic or electrochemical devices with extremely long lifespans. The present invention aims to reduce the risk of short circuits, and is particularly useful for batteries with low self-discharge. The aim is to present a method that enables the manufacture of electrochemical devices. [Means for solving the problem]

[0012] At least one of the embodiments of the present invention, as described below, achieves the above objectives. At the very least, one objective is achieved. In its first aspect, the present invention relates to electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used to provide The present invention provides an electronic or electrochemical device which includes a contact surface that defines an electrical contact area. The contact unit is positioned at least in the electrical connection area and charges electrically conductive particles. Materials, preferably polymer resins and / or sol-gels filled with electrically conductive particles. More readily available materials, and more preferably, include graphite-filled polymer resins. Includes the first layer.

[0013] Advantageously, the electrically conductive particles are titanium, nitride, or especially carbon black, graph It is made from carbon in the form of phyto or graphene.

[0014] Advantageously, this contact unit is placed in the first layer of a material filled with electrically conductive particles. It includes a second layer which contains, preferably consists of, a metal foil. This metal foil is preferably, Aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil, and foil containing metallic copper The second layer is selected from the following. The second layer is preferably less than 20 μm thick, and preferably less than 10 μm thick. It has a thickness of [thickness]. The metal of the metal foil is an alloy such as stainless steel, or copper, aluminum, etc. It can be a pure metal such as tung or molybdenum.

[0015] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0016] Advantageously, this contact unit is arranged in the second layer and consists of pure tin and / or pure zinc and / or It contains tin-metal alloys, and the metals are zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from, including the third layer.

[0017] Advantageously, this contact unit is placed in the third layer, the fourth layer of pure tin, or silver, parabens It includes a fourth layer of alloy containing um and copper.

[0018] As described above, each layer of a contact unit including two, three, or four layers is as described in the first embodiment above. It can be applied to any chemical properties of the first layer, and any technique It can be used in combinations that are technically suitable. Some combinations can be used in various embodiments. The following is shown below.

[0019] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The electronic or electrochemical device is presented and includes a contact surface that defines an electrical connection area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. It includes a second layer made of attached foil.

[0020] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. Preferably, the thickness is less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. Alternatively, it can be a pure metal such as copper, aluminum, titanium, or molybdenum. .

[0021] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0022] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The electronic or electrochemical device is presented and includes a contact surface that defines an electrical connection area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. .

[0023] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - Includes a third layer containing pure tin, placed in the second layer.

[0024] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0025] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0026] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - Includes a third layer containing pure zinc, placed in the second layer.

[0027] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0028] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0029] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - Includes a third layer containing a tin-metal alloy, which is placed in the second layer.

[0030] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0031] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0032] Advantageously, the metals in tin-metal alloys include zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from a range of options.

[0033] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, which contains pure tin, is placed in the second layer. - Includes a fourth layer of pure tin, placed in the third layer.

[0034] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0035] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0036] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, containing pure zinc, is placed in the second layer. - Includes a fourth layer of pure tin, placed in the third layer.

[0037] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0038] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0039] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, which contains a tin-metal alloy, is placed in the second layer. - Includes a fourth layer of pure tin, placed in the third layer.

[0040] Advantageously, the metals in tin-metal alloys include zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from a range of options.

[0041] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0042] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0043] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, which contains pure tin, is placed in the second layer. - The third layer includes a fourth layer of an alloy containing silver, palladium, and copper.

[0044] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0045] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0046] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, containing pure zinc, is placed in the second layer. - The third layer includes a fourth layer of an alloy containing silver, palladium, and copper.

[0047] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0048] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0049] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, which contains a tin-metal alloy, is placed in the second layer. - The third layer includes a fourth layer of an alloy containing silver, palladium, and copper.

[0050] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0051] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0052] Advantageously, the metals in tin-metal alloys include zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from a range of options.

[0053] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, which contains pure tin, is placed in the second layer. - It includes a fourth layer of an alloy consisting of silver, palladium, and copper, placed in the third layer.

[0054] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0055] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0056] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, containing pure zinc, is placed in the second layer. - It includes a fourth layer of an alloy consisting of silver, palladium, and copper, placed in the third layer.

[0057] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0058] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0059] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A metal foil, preferably gold, is placed in the first layer of a material filled with electrically conductive particles. The second layer consists of a foil, - The third layer, which contains a tin-metal alloy, is placed in the second layer. - It includes a fourth layer of an alloy consisting of silver, palladium, and copper, placed in the third layer.

[0060] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0061] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0062] Advantageously, the metals in tin-metal alloys include zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from a range of options.

[0063] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - Includes a third layer containing pure tin, placed in the second layer.

[0064] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - Includes a third layer containing pure zinc, placed in the second layer.

[0065] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - Includes a third layer containing a tin-metal alloy, which is placed in the second layer.

[0066] Advantageously, the metals in tin-metal alloys include zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from a range of options.

[0067] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, which contains pure tin, is placed in the second layer. - Includes a fourth layer of pure tin, placed in the third layer.

[0068] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, containing pure zinc, is placed in the second layer. - Includes a fourth layer of pure tin, placed in the third layer.

[0069] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, which contains a tin-metal alloy, is placed in the second layer. - Includes a fourth layer of pure tin, placed in the third layer.

[0070] Advantageously, the metals in tin-metal alloys include zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from a range of options.

[0071] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, which contains pure tin, is placed in the second layer. - The third layer includes a fourth layer of an alloy containing silver, palladium, and copper.

[0072] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, containing pure zinc, is placed in the second layer. - The third layer includes a fourth layer of an alloy containing silver, palladium, and copper.

[0073] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, which contains a tin-metal alloy, is placed in the second layer. - The third layer includes a fourth layer of an alloy containing silver, palladium, and copper.

[0074] Advantageously, the metals in tin-metal alloys include zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from a range of options.

[0075] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, which contains pure tin, is placed in the second layer. - It includes a fourth layer of an alloy consisting of silver, palladium, and copper, placed in the third layer.

[0076] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, containing pure zinc, is placed in the second layer. - It includes a fourth layer of an alloy consisting of silver, palladium, and copper, placed in the third layer.

[0077] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer containing metallic copper is placed in the first layer of a material filled with electrically conductive particles. - The third layer, which contains a tin-metal alloy, is placed in the second layer. - It includes a fourth layer of an alloy consisting of silver, palladium, and copper, placed in the third layer.

[0078] Advantageously, the metals in tin-metal alloys include zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from a range of options.

[0079] Another aspect of the present invention preferably includes at least one contact unit according to the present invention. This is an electronic or electrochemical device selected from a capacitor, battery, or lithium-ion battery. It is a chair.

[0080] Another aspect of the present invention relates to at least one contact unit of an electronic or electrochemical device such as a battery. A method for manufacturing knitwear, the method is a. Prepare an electronic or electrochemical device including a contact surface that defines an electrical connection area. Top, b. Fill at least the electrical connection area, preferably at least the contact surface, with electrically conductive particles. A polymer resin and / or sol gel, preferably filled with electrically conductive particles, is an electrically charged material. The process includes the step of depositing a first layer formed by the material obtained by the process.

[0081] Advantageously, this method allows the first layer, after step b, to be filled with electrically conductive particles, high When formed from a material obtained by molecular resin and / or sol-gel treatment, drying step The subsequent step of polymerizing the material obtained by polymer resin and / or sol-gel treatment. Includes.

[0082] Advantageously, this method can be used after step b or after the polymerization step. c. The first layer consists of a metal foil, or preferably a metal, preferably an organocopper compound or The step is to deposit an ink containing copper in the form of particles, preferably copper nanoparticles. d. The step of heat-treating at least the deposited second layer to obtain a conductive layer.

[0083] The metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, or stainless steel. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. Preferably, it has a thickness of less than 10 μm. The metal of the metal foil is an alloy such as stainless steel, This can be a pure metal such as copper, aluminum, titanium, or molybdenum.

[0084] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0085] When depositing ink into the first layer, it is advantageous to do so by immersion.

[0086] Advantageously, this method allows the electrons coated in the first and second layers after step d to In at least the electrical connection area of ​​the electrochemical device, pure tin and / or zinc and / or It deposits tin-metal alloys, and these metals include zinc, lead, palladium, gold, copper, and mixtures thereof. A mixture selected from the compound, comprising step e, preferably pure tin and / or zinc, is electrolytically dissolved. The tin-metal alloy is deposited by deposition, preferably by immersion in molten tin-metal alloy. It is deposited by this process.

[0087] Advantageously, this method involves coating in the first, second, and third layers after step e. In at least the electrical connection area of ​​an electronic or electrochemical device, pure The process includes step f, which involves depositing a layer of tin or a layer of an alloy containing silver, palladium, and copper.

[0088] In other embodiments, the present invention provides electrical contact with an external conductive element. A contact unit for electronic or electrochemical devices such as batteries, used for supplying... The present invention provides that the electronic or electrochemical device includes a contact surface that defines an electrical contact area, and the contact unit Knitwear is - A material that is placed in at least an electrical connection area and is charged with electrically conductive particles, Preferably, obtained by a polymer resin and / or sol-gel treatment filled with electrically conductive particles. The materials, and more preferably, the first layer, include a graphite-filled polymer resin. - A second layer of conductive polymer placed in the first layer, such as a layer of silver-filled epoxy resin, - The third layer of nickel, placed in the second layer, and - Includes a fourth layer of tin, placed in the third layer.

[0089] Specific aspects and embodiments of the present invention are presented only as non-limiting examples. The drawings are shown below. [Brief explanation of the drawing]

[0090] Figures 1A, 1B, 1C, and 1D show the electrical contact areas in four modifications of the present invention. A schematic diagram of the contact units arranged in the diagram is shown. [Figure 1A] Figure 1A shows the internal structure of various elements constituting the contact unit in the first modified example of the present invention. [Figure 1B] Figure 1B shows the internal structure of various elements constituting the contact unit in a second modified example of the present invention. [Figure 1C] Figure 1C shows the internal structure of various elements constituting the contact unit in a third modified example of the present invention. [Figure 1D] Figure 1D shows the internal structure of various elements constituting the contact unit in the fourth modified example of the present invention. [Figure 2] Figure 2 schematically shows a battery with a central element and two contact units located at the two ends of the central element. [Figure 3] Figure 3 schematically shows a front view of the cut section along the III-III line of the battery, and illustrates the internal structure of the central element, including the assembly of the basic cell covered by the encapsulation system, and the internal structure of the contact unit according to the present invention. [Figure 4] Figure 4 shows an exploded perspective view of a stack of anode and cathode thin layers, where the anode and cathode thin layers are offset laterally. [Figure 5A] Figure 5A shows the output section of the anode, i.e., the anode current collector, which represents the electrical connection region, with its periphery surrounded by a sealing system. [Figure 5B] Figure 5B shows a diagram of the cathode output section, or cathode current collector, which represents the electrical connection region, with its periphery surrounded by a sealing system. [Figure 6A] Figure 6A schematically shows a front view of a cut-out portion of a battery similar to that in Figure 3, and illustrates the internal structure of various elements constituting the contact unit in the first modified example of the present invention. [Figure 6B] Figure 6B schematically shows a front view of a cut-out portion of a battery similar to that in Figure 3, and illustrates the internal structure of various elements constituting the contact unit in the second modified example of the present invention. [Figure 6C] Figure 6C schematically shows a front view of a cut-out portion of a battery similar to that in Figure 3, and illustrates the internal structure of various elements constituting the contact unit in the third modified example of the present invention. [Figure 6D]Figure 6D schematically shows a front view of a cut-out portion of a battery similar to that in Figure 3, and illustrates the internal structure of various elements constituting the contact unit in the fourth modified example of the present invention.

[0091] Table 1 shows a list of reference numerals used in the figures. [Table 1] [Modes for carrying out the invention]

[0092] [Definition] Unless otherwise stated, the concept of "conductivity" as used herein refers to electrical conductivity.

[0093] "Ink" refers to any ink that can be applied to a support and, after solidification, can produce a solid conductive layer. This refers to a fluid composition. The ink can be in the form of a suspension or solution. A conductive layer is obtained. The ink processing that makes this possible involves, in particular, heat treatment such as drying, polymerization, or sintering. It is possible.

[0094] Epoxy resin refers to a resin containing at least one polyepoxide polymer.

[0095] [Detailed description of the invention] The electrical contact unit 40 of an electronic or electrochemical device such as a battery 1 according to the present invention is shown in Figure As shown in Figures 1A, 1B, 1C, and 1D, at least one of the electronic or electrochemical devices It is also located in another electrical connection area 50. Figures 1A, 1B, 1C, and 1D show the contact The various layers that make up the unit each have a specific function separate from their role in electrical conductivity. The contact units in the first, second, third, and / or fourth embodiments of the present invention are respectively The internal structure of the various constituent elements is shown.

[0096] The contact units described below are as possible or conceivable to those skilled in the art. These contact units can be applied to electronic or electrochemical devices. This involves making the necessary electrical contacts for electronic or electrochemical devices to function properly. Alternatively, they are added to electrochemical devices. These contact units are advantageous for liquid electrolytes. Batteries containing impregnated dense or porous electrodes, and batteries containing solid electrolytes, function properly. It can be used to make the necessary electrical contacts.

[0097] The structure of the contact unit 40 of an electronic or electrochemical device is described here in four embodiments of the present invention. This is described in terms of the state, and as a particularly non-limiting example, in a battery 1 such as a lithium-ion battery The structure of the contact unit 40 according to the present invention is described below.

[0098] Battery 1 has a central structure that allows for the deposition of the encapsulation system 30 and according to the present invention It has a contact member 40 (see Figure 2). Figure 3 shows the basic unit covered by the sealing system 30. Internal structure of the central element including assembly L2 and internal structure of the contact unit 40 according to the present invention This is a front view of the cut section of battery 1. Each basic cell is made from a stack of thin layers. It comprises an anode 10 and a cathode 20. The anode is made of a thin layer 13 of electrolyte material, Li4 Ti5O 12 Thin layer 12 of an active anode material, thin layer 11 of metal (for example, stainless steel) (made from), Li4Ti5O 12 A thin layer 12 of an active anode material, and an electrolyte material It contains a thin layer 13. The cathode 20 is an electrolyte material thin layer 23, such as LiMn2O4. A thin layer 22 of the active cathode material, a thin metal layer 21 (for example, made from stainless steel), LiM It subsequently contains a thin layer 22 of an active cathode material such as n2O4 and a thin layer 23 of an electrolyte material. The battery has an alternating series of at least one anode 10 and at least one cathode 20 Including these, the two adjacent sheets form the available connection area, as shown in Figure 4. At least one convex portion RS used to achieve this, and a covering region, i.e., an inclusion system At least one concave portion R used to form the area covered by Tem 30 Define R.

[0099] After the step of stacking the thin layers that make up the basic cell 2 (see Figure 4), the battery is exposed to the atmosphere. To protect it, the stack can be sealed in the sealing system 30. The quality of the sealing is This is extremely important for lithium-ion batteries. The encapsulation system 30 functions as a barrier layer. To meet these requirements, it must be chemically stable, withstand high temperatures, be protected from moisture, and be impermeable to air. This is illustrated as follows: the stack is then filled with the parts of the object that need special protection. It can consist of multiple layers. This encapsulation system is used for the electrical components or batteries. This allows for insulation and sealing, while also providing electrical isolation between them and / or at external connection points. This ensures the possibility of being able to connect to it.

[0100] As shown in Figures 5A and 5B, before depositing the contact unit 40, the sealing system 30 The coated stack is cut along the cutting plane, and especially in the convex parts, Then, to expose the respective cut surfaces at the (+) and (-) connections of the battery, One battery can be obtained, and the encapsulation system can be assembled without welding the system. Preferably, four of the six sides of the battery are covered continuously, leaving the other two sides of the battery uncovered. After that, it will be covered by the contact unit 40. Advantageously, the battery has a cathode and The current collector of the corresponding anode includes a contact unit 40 in the visible portion. Preferably The anode electrical connection region 50 and the cathode electrical connection region 50 are located on opposite sides of the stack. They are arranged (see Figures 5A and 5B). In these electrical connection areas and preferably this The contact units 40 according to the present invention are deposited around these electrical connection areas.

[0101] Here, regarding Figures 1A, 1B, 1C, 1D, 6A, 6B, 6C, and 6D Next, five embodiments of the contact unit according to the present invention are described.

[0102] [Electrical contact unit in the first embodiment of the present invention] The electrical contact unit 40 of an electronic or electrochemical device such as a battery 1 according to the present invention is an electrical contact unit 40 The material includes a first layer 41 containing a material filled with air-conductive particles. This material is advantageously electronic or It is inert to electrochemical reactions that occur in electrochemical devices. Therefore, this material is advantageously inert at the operating potential of the device's electrodes. The material preferably contains electrically conductive particles, which are advantageous for the electrochemical reactions that occur in the device. A polymeric resin (preferably epoxy resin) that is inert to, and / or a sol gel. This material is obtained through processing. As shown in Figure 1A, this material is an electronic or electrochemical device. It is deposited on at least one electrical connection area 50 of the chair.

[0103] If the device is an electrochemical device, the composition of the electrical contact unit according to the present invention or In materials involved in the structure, the material is advantageous in that it is resistant to the electrochemical reactions occurring in the device. It is selected to be inactive.

[0104] Electrically conductive particles that are inert to the electrochemical reactions occurring in the electronic or electrochemical device. The child is preferably in the form of carbon black, graphite, or graphene. Made from carbon, titanium, or nitride. Minimizing contact resistance. To eliminate carbon in the suspension or ink used to create this first layer, The content is preferably more than 15% by mass.

[0105] The polymer resin can be an epoxy resin. The polymer resin is advantageously at least A polyepoxide obtained from one polymerizable precursor material, preferably at least one photoweight It can be a polyepoxide obtained from a synthetic precursor material. Advantageously, a polymer resin When it is an epoxy resin, the carbon content in the suspension or ink used is 15 It is more than the mass % of carbon black.

[0106] The material obtained by sol-gel treatment can be silica.

[0107] Materials obtained from polymer resins (preferably epoxy resins) and / or sol-gel treatments. It also conforms to the techniques used to fabricate electronic or electrochemical devices, such as heat treatment. It is necessary to do so. For example, in the case of lithium-ion batteries, polymer resin (preferably epoxy) is used. Materials obtained by resin and / or sol-gel treatment are chemically compatible with lithium. To prevent any degradation of its characteristics, the manufacturing process of such batteries must conform to the following steps. . The material obtained by polymer resin (preferably epoxy resin) and / or sol-gel treatment needs to be a component that is stable from both chemical and thermal perspectives.

[0108] Carbon can be introduced into the material obtained by polymer resin and / or sol - gel treatment in the form of nanoparticles and / or any other form.

[0109] This layer 41 filled with particles that are electrically conductive and preferably inert to the electrochemical reactions occurring in the electronic or electrochemical device such as battery 1 is conductive. Preferably , it is flexible so that it can absorb any deformation that the electronic or electrochemical device such as battery 1 undergoes, especially when welding to an electronic circuit. Due to its flexibility, this [[ID=?]] layer has no risk of rupture at the interface when mechanical stress occurs.

[0110] Further, when the device is an electrochemical device containing an insertion material, even if the dimensions of the insertion material are considered to be stable, it will necessarily deform slightly according to the degree of insertion. This is especially true for lithium-ion batteries 1 containing lithium insertion materials. Therefore, the layer 41 of the material filled with electrically conductive particles protects the electrical contact by absorbing deformation especially during the insertion and extraction steps of the electrode material. The particles present in the layer of the material filled with electrically conductive particles, which are electrically conductive and based on carbon, especially graphite, unlike the prior art epoxy resin filled with non-deformable silver, provide good conductivity at the electrical contact without degrading the performance of the device.

[0111] It seems there is an error in the original text where "[[ID=?]] " has a question mark in the ID. I've translated it as is based on the instructions, but you may want to correct that in the original if it's a mistake.Furthermore, carbon, especially in the form of carbon black or graphite, is a precious metal. It is less expensive than the latter, and the latter is particularly in the form of carbon black or graphite. Replacing it with n has economic advantages.

[0112] A layer of material filled with electrically conductive particles, preferably a polymer resin filled with carbon, is Advantageously, it has a thickness of 5 μm to 50 μm. Advantageously, this first layer 41 has a resistivity of To minimize this, the thickness is less than 50 μm; in other words, if this first layer 41 is made thinner, The resistance becomes smaller. Advantageously, this first layer 41 has a minimum thickness of 5 μm. Furthermore, good electrical contact between all layers of electrodes in electronic or electrochemical devices such as batteries. This provides a solution, and then compensates for any alignment or positioning defects that may exist between the electrodes. It is possible.

[0113] For example, the electrode is Li4Ti5O 12 When based on, polymer resins and / or sol gels The material obtained through the process is preferentially filled with carbon, and the carbon is Li4Ti5O1 It is inert at the operating potential of the anode based on 2. This carbon is carbon black It can be carbon, graphite, or graphene. Carbon is in the form of nanoparticles and and / or in any other form, the polymer resin and / or the material obtained by sol-gel treatment It can be implemented.

[0114] In the first embodiment of the present invention, the method for obtaining such an electrical contact unit 40 The law, first of all, a. Prepare an electronic or electrochemical device including a contact surface 51 that defines an electrical connection area 50. Steps to take b. A material filled with electrically conductive particles by any suitable means, preferably electrically conductive The first layer of a polymer resin and / or a material obtained by sol-gel treatment, filled with conductive particles. 41 is deposited at least on the electrical connection area 50, preferably at least on the contact surface 51. The step is to have the deposited portion electrically connected, as shown in Figure 6A as an example. The continuation region 50, preferably the contact surface 51, is to be completely covered, and it protrudes slightly from the edge of the contact surface. Therefore, it includes steps to ensure optimal protection of devices such as batteries.

[0115] A material filled with electrically conductive particles, preferably a material filled with graphite, preferably The graphite-filled polymer resin layer 41 is piled by any suitable means, in particular by immersion. This layer 41 can be stacked. Preferably, the layer 41 is dried and filled with electrically conductive particles. When the material is a polymer resin and / or a material obtained by sol-gel treatment, this layer has For the benefit, it is polymerized before any subsequent other deposition.

[0116] [Electrical contact unit in a second embodiment of the present invention] In this second embodiment, the first layer is as shown above in the first embodiment. And for the same purpose, it is deposited.

[0117] Advantageously, the electrical contact units 40 of the electronic or electrochemical device are deposited in the first layer 41. The second layer 42 contains metallic copper, or the second layer 42' consists of metal foil deposited on the first layer 41. The metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, and ste Selected from stainless steel foil and foil containing metallic copper. Advantageously, this metallic foil is less than 20 μm thick. a thickness of full, preferably less than 10 μm, more preferably about 5 μm, and even more preferably has a thickness of less than 5 μm. The metal of the metal foil can be an alloy such as stainless steel, or a pure metal such as copper, aluminum, titanium, or molybdenum.

[0118] The properties of the metal foil of the contact unit according to the present invention used for contacting the anode and the cathode can be different.

[0119] The first layer 41 typically includes a material filled with electrically conductive particles, preferably a material obtained by filling electrically conductive particles and a polymer resin and / or a sol-gel treatment (see FIGS. 1 B and FIG. 6B).

[0120] The second layers 42, 42' first provide structural impermeability, that is, prevent the movement of water within the device, and then protect the first layer 41 from the atmosphere, particularly from air and moisture, fulfilling two functions. Therefore, the second layers 42, 42' prevent structural degradation and improve the lifespan of the electronic or electrochemical device. Further, when the electronic or electrochemical device is incorporated into an electronic chip well known by the expression "integrated circuit", the second layer 42 containing metallic copper facilitates the connection between various components of the integrated circuit and ultimately facilitates their implementation.

[0121] A method for obtaining such an electrical contact unit 40 according to the present invention first a. preparing an electronic or electrochemical device including a contact surface 51 defining an electrical connection region 50 step, b. by any suitable means, a material filled with electrically conductive particles, preferably an electrically conductive The first layer of a polymer resin and / or a material obtained by sol-gel treatment, filled with conductive particles. 41 is deposited at least on the electrical connection area 50, preferably at least on the contact surface 51. Preferably, this deposit completely covers the electrical connection area 50, preferably the contact surface 51. Therefore, it protrudes slightly from the edge of the contact surface, ensuring optimal protection of the device. Step (see Figures 5A and 5B), c. By any suitable means, a metal foil, or an organic copper compound or particles, preferably The steps include depositing an ink containing copper in the form of copper nanoparticles onto the first layer 41, and d. The step of heat-treating at least the deposited second layer to obtain conductive layers 42, 42', include.

[0122] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness is preferably less than 10 μm. The metal of the metal foil is an alloy such as stainless steel. It can be gold, or a pure metal such as copper, aluminum, titanium, or molybdenum. ru.

[0123] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0124] When depositing ink into the first layer, it is advantageous to do so by immersion.

[0125] When the second layer is obtained by depositing metal foil by any suitable means, less However, the heat treatment of the second deposition layer facilitates adhesion between the first and second layers, that is, electrical This facilitates adhesion between the gas connection region (anode and cathode) and the second layer, and fixes it to the first layer. A conductive layer 42' can be obtained.

[0126] Fixed means that, under normal operating conditions, the first and second layers are attached to each other without any degree of freedom. It means to do something.

[0127] The conductive layer 42' is 1 μm to 50 μm, regardless of the modified embodiment of the present invention. It is advantageous to have a thickness of 3 μm to 20 μm. A thickness of 1 μm is advantageous for a battery. It is sufficient to ensure the impermeability of any electronic or electrochemical device.

[0128] The second layer is made using an ink containing an organocopper compound and copper particles, preferably in the form of copper nanoparticles. When obtaining this, the heat treatment of at least the second layer of deposited material is performed on conductive metallic copper that does not contain organic compounds. This makes it possible to obtain layer 42.

[0129] The metallic copper layer 42 is 1 μm to 50 μm, regardless of the modified embodiment of the present invention. It is advantageous to have a thickness of m, preferably 3 μm to 20 μm. A thickness of 1 μm is advantageous for battery 1 This is sufficient to ensure the impermeability of electronic or electrochemical devices such as those mentioned above.

[0130] An ink containing an organocopper compound and copper in the form of copper particles, preferably copper nanoparticles, is applied to the first layer 4 The deposition in 1 can be carried out by any suitable means, preferably by immersion. can.

[0131] The copper layer 42 can be deposited, in particular, electrochemically. However, this technique is... A material loaded into an aqueous bath and covered with electrically conductive particles, preferably a polymer resin and It is necessary to immerse the electrical connection area covered with the material obtained by and / or sol-gel treatment. Therefore, since this electrical contact area is not completely sealed, it may be affected by electronic or electrochemical devices. Therefore, it is preferable not to use such technologies in order to avoid degrading the performance of the battery.

[0132] In order to produce the metallic copper layer 42, an organic ink, that is, a solution containing an organocopper compound, This is a deposition technique based on a suspension containing copper particles, preferably copper nanoparticles, dispersed in an organic solvent. It is preferable.

[0133] The organic ingredient used contains an organocopper compound and copper particles, preferably in the form of copper nanoparticles. For example, the product contains copper nanoparticles functionalized by polyvinylpyrrolidone (PVP). Used for printing conductive tracks on polymer supports such as inks, or for printing prints. The same ink used in the luminaire electronic device can be used. Advantageously, the ink is copper When particles, preferably copper nanoparticles, are included, the latter constitute 10% to 85% by mass of the ink. The degree of dilution of copper particles in the ink adjusts the viscosity of the suspension, and this This allows for adjustment of the thickness of the second layer. The solvent can be an organic substance, especially ethylene glycol. The average diameter of the copper particles is approximately The size is 10 nanometers, preferably 30 nm to 40 nm.

[0134] The heat treatment of the ink deposited in the first layer is sintering. This involves a small amount of copper nanoparticles. The aim is to increase the density of the second deposit layer. This is achieved using flash sintering technology ("fl (known by the English expression "ash light sintering") This can be done in particular by sintering under a pulsed xenon lamp. However, this layer 42 contains insulating organic material that needs to be removed by heat treatment. The heat treatment is simply metallic copper. This leads to the decomposition of organic compounds in the suspension or ink, which becomes a gas phase, leaving behind deposits. Similarly, when a suspension or ink contains copper nanoparticles, these heat treatments also remove organic solvents. During the removal process, nanoparticles are bonded together, and these are sintered at a low temperature, resulting in a high-density and electrically charged layer of metallic copper. The sediment can be made denser until it is conductive to air.

[0135] These techniques make it possible to obtain pure copper films at relatively low temperatures, and their density is achieved during sintering. It varies depending on the interval and temperature conditions.

[0136] Advantageously, the deposited layers have as few voids, holes, cracks, and other compaction defects as possible. Therefore, it is made denser. This densification step is achieved by heat treatment and / or by kerating. This can be done by irradiation under a cenon lamp. The optimal temperature is determined by the amount of the suspension being deposited. It largely depends on the ink, resin, and powder used. Advantageously, sintering can be performed at temperatures not exceeding 300°C. In some embodiments, this does not exceed 200°C.

[0137] Furthermore, the inventors found that as the size of the deposited copper particles decreases, the heat treatment temperature can be increased. We found that it could be reduced. Thus, by using high temperature and / or long-duration heat treatment Without any porosity, the sediment can be prepared in a thin layer with a porosity of less than 5%, or even less than 2%. This is possible. When the suspension or ink used contains copper nanoparticles, the sintering temperature and duration This allows for a reduction in the gaps between layers, resulting in a nearly completely densely packed layer, i.e., less than 5%. The temperature is approximately 200-300°C to obtain a layer with a certain degree of porosity.

[0138] The type used in the method of the present invention, i.e., about 10 nm, preferably 30 nm. For particle sizes of m to 40 nm, the main driving force behind density increase through heat treatment is surface energy. This is an increase in energy, and as particle size decreases, thermal density increases significantly at lower temperatures. This means that it starts from there. Also, the presence of aggregates and interaggregate voids affects densification. Therefore, to prevent clumping, the suspension or ink must be stable, preferably with a stabilizer. It is important to include this.

[0139] In the present invention, at least one, preferably all, of the deposited layers is made highly dense To be extremely advantageous, when the second layer 42 contains copper nanoparticles, it has low internal resistance and In order to obtain a high-quality metallic copper layer that properly bonds the first and second layers, a good sintering process is used. Alternatively, irradiation with a UV lamp can be used to remove the deposit of this second layer (before the deposit of a new layer), Perform the densification step.

[0140] Apart from being highly electrically conductive, the metallic copper layer is 100% solidified. Even without doing so, immersion in molten metal or molten alloy can help deposit other layers. A bonding surface is created. This is because the tin and / or zinc alloy is sufficiently moistened on the copper surface. That is the case.

[0141] [Electrical contact unit in the third embodiment of the present invention] In the third embodiment, an electrical contact unit for an electronic or electrochemical device according to the present invention teeth, - Completely cover the electrical connection area, preferably the contact surface, of the electronic or electrochemical device. To ensure adequate protection, at least one electrical connection area of ​​an electronic or electrochemical device Preferably, an electrical coating deposited in the region, on at least one contact surface defining the electrical connection region. Materials filled with air-conducting particles, preferably polymer resins filled with electrically conductive particles, and / or materials obtained by sol-gel processing, and more preferably filled with electrically conductive particles. The first layer 41 of epoxy resin, - A first layer of a material filled with electrically conductive particles, preferably aluminum foil. and a second layer 42' consisting of a metal foil selected from stainless steel foil, or containing metallic copper, - Contains pure tin and / or pure zinc and / or tin-metal alloys, wherein the metals are zinc, lead, and A third layer 43 is deposited in the second layer, selected from radium, gold, copper, and mixtures thereof. (See Figures 1C and 6C)

[0142] This metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil. The second layer is selected from steel foil and foil containing metallic copper. The second layer is preferably less than 20 μm thick. The thickness, and more preferably less than 10 μm, is required. The metal of the metal foil is stainless steel. This may be an alloy such as steel, or a pure metal such as copper, aluminum, titanium, or molybdenum. It is possible.

[0143] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0144] The second layer, containing metallic copper, can be obtained by depositing ink. When depositing, it is advantageous to deposit by immersion.

[0145] In this third embodiment, the first and second layers are as previously shown in the second embodiment. As described above, and for the same purpose, it is deposited. Layer 3 43 is pure tin and / or pure zinc and / or tin-metal alloys, wherein the metal is zinc, lead, palladium, gold, copper, and mixtures thereof. Selected from the composite. The tin-metal alloy is preferably used in the second layer by any suitable means. They are deposited by immersion in molten alloy. These molten metals and alloys in copper The excellent wetting properties of gold ensure that all defects are fully compensated for, and its low WVTR It provides. Water vapor permeability (WVTR) is specified in U.S. Patent No. 7,624,621. This information is included in the book, as well as in the magazine Thin Solid Films 6+. Published in 550 (2014) 85-89, by A. Mortier et al. Object “Structural properties of ultraviolet c ured polysilazane gas barrier layers on It can be measured by the method described in "polymer substrates". can.

[0146] Furthermore, the chemical composition of the alloy deposited by immersion in molten metal is called "sold" in English. During the subsequent welding remelting step called er-reflow (solder reflow), To ensure the suitability and integrity of the metal protective layer, the melting point of the alloy is as low as possible, but always It is specified that the temperature must exceed 250°C.

[0147] The layer obtained by immersion in molten metal is completely dense, metallic, and moisture-free. It is considered to be completely impermeable to the penetration of the third metal layer 43. , ensuring complete sealing of the battery. And any defects that may be present in the metallic copper layer 42 The holes are made by immersion in molten metal, by zinc plating, or by tin plating. The repair is achieved by creating this third layer through hot-dip tin plating.

[0148] This third layer 43 provides the device with impermeability and weldability.

[0149] This method has numerous advantages. The third layer is easy to implement and quick. Deposited. To obtain good impermeability of electrical contact units and device structures, atomic layers It is not necessary to use methods such as deposition (ALD) or vacuum deposition.

[0150] The third layer 43 preferably contains a low-melting-point alloy, and ideally these alloys do not damage the battery. In addition to preventing damage, reflow welding of electronic components is performed at 260°C, so - To remain solid during the assembly steps, it has a melting point of 280-320°C. It can be designed to do so. As an example, a Sn / Zn alloy is preferred, and the Zn content is It can be said that it is approximately 40% by mass ± 10% by mass, which gives a melting point of approximately 300°C. In other words, it has a higher melting point than pure tin (232°C) used in reflow assembly. It is possible.

[0151] Furthermore, tin-metal alloys (such as tin-zinc alloys) moisten the copper present in the second layer 42. , completely covering. After cooling, this third layer becomes dense, i.e., poreless.

[0152] [Electrical contact unit in the fourth embodiment of the present invention] In the fourth embodiment, the electrical connection of an electronic or electrochemical device such as a battery according to the present invention The contact unit is - Completely cover the electrical connection area, preferably the contact surface, of the electronic or electrochemical device. To ensure adequate protection, at least one electrical connection area of ​​an electronic or electrochemical device Preferably, an electrical coating deposited in the region, on at least one contact surface defining the electrical connection region. A material filled with electrically conductive particles that are inert to the electrochemical reactions that occur in a pond, The battery is filled with electrically conductive particles that are inert to the electrochemical reactions that occur in the battery. Materials obtained by polymer resin and / or sol-gel treatment, and more preferably, , epoxy filled with electrically conductive particles that are inert to the electrochemical reactions that occur in batteries First layer 41 of xyl resin, - The second layer 42, 42', which consists of metal foil or contains metallic copper, deposited on the first layer. - The second layer contains pure tin and / or pure zinc and / or tin-metal alloys, The metal is selected from zinc, lead, palladium, gold, copper, and mixtures thereof, third layer 4 3, and - A fourth layer 44 of pure tin deposited on the third layer, or preferably silver, palladium, and It includes a fourth layer of copper-containing alloy (see Figures 1D and 6D).

[0153] The second layer of metal foil is preferably aluminum foil, copper foil, titanium foil, molybdenum foil, etc. The second layer is selected from stainless steel foil and foil containing metallic copper. The second layer is preferably 20 μm thick. The thickness is less than 10 μm, preferably less than 10 μm. The metal of the metal foil is stainless steel, etc. This can be an alloy of copper, aluminum, titanium, or a pure metal such as molybdenum. can.

[0154] A contact unit according to the present invention, used to bring the anode and cathode into contact. The properties of metal foils can vary.

[0155] In this fourth embodiment, the first layer, the second layer, and the third layer are as in the first embodiment, the second embodiment As shown previously in the third embodiment, and for the same purpose, the form is deposited The fourth layer 44 is made of pure tin, or preferably an alloy containing silver, palladium, and copper. The third layer is deposited by any appropriate means.

[0156] Pure metals such as tin are preferably deposited by electrowelding.

[0157] This fourth layer improves the quality of electrical contact unit connections in an easy, simple, and quick manner. This ensures good weldability of the electrical contact unit while reducing contact resistance. In a four-layer chemical composition, the latter is advantageous because it only slightly oxidizes the contact areas.

[0158] These third and fourth layers give the electrical contact unit an extremely long lifespan. The fourth layer is Preferably, when the alloy includes silver, palladium, and copper, this alloy is different from tin. It does not oxidize, and therefore provides better performance to the electrical contact unit over time.

[0159] An electronic or electrochemical device containing at least one such contact unit is extremely long It has a long lifespan.

[0160] [Electrical contact unit in the fifth embodiment of the present invention] In this fifth embodiment, the first layer is as previously shown in the first embodiment. And for the same purpose, it is deposited.

[0161] Advantageously, in this fifth embodiment, the electrical contact unit of an electronic or electrochemical device 40 consists of multiple layers, namely the first layer 41, the first layer being an epoxy resin filled with silver, etc. A second layer of conductive polymer is placed on the second layer, a third layer of nickel is placed on the second layer, and the third layer It consists of four layers of tin.

[0162] The first layer 41 is typically a material filled with electrically conductive particles, preferably electrically conductive This includes a polymer resin filled with particles and / or a material obtained by sol-gel treatment. The first layer inserts lithium into the second layer of a conductive polymer such as a silver-filled resin. It can be omitted.

[0163] A second conductive polymer, preferably an epoxy resin filled with silver, is used to protect electrical circuits from thermal stress and / or, when subjected to vibration stress, provides "flexibility" to the connection without damaging the electrical contacts. This is possible. The nickel layer protects the polymer layer during the welding assembly step. Furthermore, the tin layer provides weldability to the battery interface.

[0164] The battery in this invention is a lithium-ion microbattery, a lithium-ion minibattery, or This can be used to create a high-power lithium-ion battery. In particular, this is suitable for batteries with a capacity of approximately 1 mAh or less. To have a capacity greater than approximately 1mAh and approximately 1Ah (commonly called a "micro battery") To have the following output (commonly called "mini batteries"), or a capacity greater than approximately 1Ah Designed to have a certain quantity (commonly called a "power battery"), and thus sized accordingly. It can be. Typically, microbatteries are manufactured in microelectronics. It is designed to conform to the manufacturing method.

[0165] Each of these three output ranges of battery is: - A "completely solid" type layer, i.e., an impregnating liquid phase or viscous phase (the liquid phase or viscous phase is, (It can be used as a medium that allows lithium ions to pass through, which can act as an electrolyte.) layer, - Or, as this layer can be considered almost solid, typically, if it spontaneously enters the layer This layer is impregnated with a liquid or viscous phase, which is a medium that allows lithium ions to pass through and does not leave this layer. A layer of mesopores of the "perfectly solid" type, - Or, an impregnated porous layer (i.e., capable of impregnating a liquid phase or viscous phase, and having a wet-type layer) It can be made from either a layer having a grid of open holes that provides properties. [Examples]

[0166] The method of the present invention, in the context of manufacturing a battery, particularly its contact unit, is as follows: It can be done in this way.

[0167] Example 1: Manufacturing of a battery 1 using the electrical contact unit 40 according to the present invention

[0168] a.Li4Ti5O 12 Anode fabrication based on As the anode material, Li4Ti5O is used to obtain a particle size of less than 100 nm. 12 The nanoparticles are prepared by grinding. Next, Li4Ti5O 12 Obtain a suspension of nanoparticles Therefore, Li4Ti5O 12 These nanoparticles are mixed with several ppm of citric acid at a concentration of 10 g / l. Disperse in water and ethanol.

[0169] Stainless steel foil containing L4Ti5O contained in the suspension prepared so far 12 nanoparticles The negative electrode was prepared by electrophoretic deposition. On both sides of the substrate, a film of L4Ti5O 12 of (about 1 micron) was deposited. Next, to improve the adhesion to the substrate and complete the recrystallization of L4Ti5O 12 , these films were heat-treated at 600 °C for 1 hour so that the nanoparticles were welded together.

[0170] b. Fabrication of a cathode based on Li 1+x Mn 2-y O4 As the cathode material, crystalline nanoparticles of Li 1+x Mn 2- y O4 with a particle size of less than 100 nm were prepared by grinding with x = y = 0.05. Next, to obtain a suspension of nanoparticles of Li1 +x Mn 2-y O4, the nanoparticles of Li 1+x Mn 2-y O4 were dispersed in absolute ethanol at 25 g / l. Next, this suspension was diluted in acetone to a concentration of 5 g / l. The positive electrode was prepared by electrophoretic deposition of the nanoparticles of Li 1+x

[0171] Mn 2-y O4 with x = y = 0.05 contained in the suspension prepared so far onto a stainless steel foil. On both sides of the substrate, a thin film of Li 1+x Mn 2-y O4 (about 1 micron) was deposited. Next, to improve the adhesion to the substrate and complete the recrystallization of LiMn 1+x 2-y O4, these films were heat-treated at 600 °C for 1 hour so that the nanoparticles were welded together. 1+x Mn 2-y O4, these films were heat-treated at 600 °C for 1 hour so that the nanoparticles were welded together. These films were heat-treated at 600 °C for 1 hour so that the nanoparticles were welded together to complete the recrystallization of Li

[0172] c. Li3PO4 nanoparticles in the anode and cathode layers fabricated to date. Preparation of a porous layer using a suspension A suspension of Li3PO4 nanoparticles was prepared from the two solutions shown below. Dissolve 45.76g of CH3COOLi,2H2O in 448ml of water, and add 224ml of water. Ethanol was added to the solvent while stirring vigorously to obtain solution A. Dilute 16.24 g of H3PO4 (85% by weight in water) in 422.4 ml of water, and 18 2.4 ml of ethanol was added to this solution to obtain a second solution, which will be referred to as solution B below.

[0173] Next, solution B was added to solution A while stirring vigorously.

[0174] The resulting solution is completely clear after the bubbles formed during mixing disappear. Under the operation of a high-performance homogenizer, 4.8 liters of acetone were added, along with the solvent. Homogenization was performed. A white precipitate was immediately observed in the suspension in the liquid phase.

[0175] The reaction medium was homogenized for 5 minutes, then maintained for 10 minutes while being magnetically stirred. The mixture was left to settle for 1-2 hours. After separating the supernatant, the remaining suspension was steeped for 10 minutes. It was centrifuged at 6000g. Next, 1.2 liters of water were added to resuspend the precipitate. (Use of sonotrode and magnetic agitation). Then, clean this type of dish two more times with ethanol. I did it. I vigorously applied a 15 ml solution of bis[2-(methacryloyloxy)ethyl] phosphate. While stirring, add 1 g / ml to the colloidal suspension in ethanol obtained in this way. The suspension became even more stable. Next, the suspension was sonotrode The suspension was then ultrasonically treated. Next, the suspension was centrifuged at 6000g for 10 minutes. Next, the residue The mixture was then redispersed in 1.2 liters of ethanol and centrifuged at 6000g for 10 minutes. The obtained residue is redispersed in 900 ml of ethanol and prepared for electrophoretic deposition. Obtain a 15 g / l suspension.

[0176] In this way, an aggregate of approximately 200 nm consisting of 10 nm primary particles of Li3PO4 is formed using ethanol. It was obtained in a suspension in a liquid.

[0177] Next, an electric field of 20 V / cm was applied to the suspension of Li3PO4 nanoparticles obtained so far. By applying the electrophoresis for several seconds, the surfaces of the anodes and cathodes that have been fabricated so far are subjected to electrophoresis. A porous thin layer of Li3PO4 was deposited by motion, obtaining a layer of approximately 2 μm. Next, in air... The layer was dried at 120°C, and in this layer that had been dried so far, 12 at 350°C A 0-minute burning treatment was performed to remove any traces of organic residue.

[0178] Multiple thin anodes and corresponding cathodes were fabricated according to the method described above.

[0179] d. Fabrication of a battery containing multiple electrochemical cells According to Example a and the corresponding Example b, a thin layer of multiple anodes and the corresponding cathode The electrodes were fabricated using a suspension of Li3PO4 nanoparticles as described above. It was covered with an electrolyte layer.

[0180] The electrodes fabricated so far (LiMn2O4 and Li4Ti5O 12 ) 2μ After depositing a porous Li3PO4 of m, two Li3PO4 films are brought into contact. Subsystems were stacked. Next, a thin film of Li3PO4 was placed in contact with a porous layer. This stack, which consists of alternating cathodes and anodes in layers, is subjected to thermal pressure in a vacuum. did.

[0181] To do this, the stack is placed under a pressure of 5 MPa, and then in a vacuum for 10 -3 The plate was dried with a crowbar for 30 minutes. Then, the plate was pressurized at a rate of 0.4°C / second. It was then heated to 550°C. Next, at 550°C, the stack was subjected to a pressure of 45 MPa for 20 minutes. The system was thermally compressed for several minutes, and then cooled to ambient temperature.

[0182] After assembling the parts, dry them in a vacuum (10 mmbar) at 120°C for 48 hours. Thus, a multilayer rigidity system consisting of multiple assembled cells was obtained.

[0183] Thus, each of these lithiums includes multiple electrochemical cells, each containing electrodes in the present invention. I obtained a mu-ion battery.

[0184] e. Preparation of electrochemical cells or sealed batteries An electrochemical cell and a corresponding battery including a plurality of electrochemical cells are described in Example e and the corresponding example. These devices were fabricated according to example f. These devices were encapsulated in a series of layers.

[0185] A first layer of parylene F (CAS1785-64-4) with a thickness of approximately 2 μm is placed in an electrochemical cell. The cells were deposited by CVD onto a corresponding battery containing multiple electrochemical cells.

[0186] Next, a layer of alumina (Al2O3) was deposited on the first layer of parylene F using ALD (Advanced Liquid Deposition). An electrochemical cell covered with a layer of parylene, and a corresponding battery including multiple electrochemical cells, I put it in the chamber of the Picosun (registered trademark) P-300 ALD reactor. The chamber of the D reactor was pre-vacuumed at 5 hPa and 120°C, and pre-emptively 150 sccm (standard cm) 3 Less than 3 ppm as a carrier gas at a rate of ( / min) Under nitrogen conditions containing ultrapure water type 1 (σ≒0.05μS / cm), the chemical precursor of alumina Trimethylaluminum (hereinafter TMA)-(CAS:75-24-1) was run for 30 minutes. The reactor chamber environment was stabilized before any deposition. After the chamber was stabilized, A 30 nm layer of Al2O3 was deposited by ALD.

[0187] Next, a layer of parylene F approximately 2 μm thick was added to the second layer of alumina Al2O3 by CVD. They deposited it.

[0188] Next, a layer of alumina Al2O3 with a thickness of approximately 30 nm is added to this third layer of parylene F, as described above. It was deposited by ALD.

[0189] Next, in this fourth layer, a layer of epoxy resin approximately 10 μm thick was deposited by immersion. Next, in order to reduce the rate of battery decomposition by atmospheric components, this fifth layer is exposed to ultraviolet (UV) light. It was hardened.

[0190] Next, to obtain an electrochemical cell, a corresponding single battery, the stack enclosed in this manner After cutting along the cutting plane, the electrochemical cell and the cathode and corresponding A of the battery In this way, the sealed st The stack is cut along two of its six faces, and the cathode and corresponding anode are separated. The current collector was visualized.

[0191] Next, this assembly is subjected to an electrolyte solution containing PYR14TFSI and 0.7M LiTFSI. It was impregnated by immersion in the liquid under an anhydrous atmosphere. PYR14TFSI is 1- Butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide It is an abbreviation for LiTFSI, which stands for Lithium Bis-Trifluoromethanesulfonimide. This is a common abbreviation for CAS number: 90076-65-6. Ionic liquids exhibit capillary action. It enters the pore more immediately. Each of the two ends of the system is filled with a small amount of electrolyte mixture. Maintain immersion for 5 minutes, then remove any excess residue by buffering. Ku.

[0192] f. Fabrication of contact units for sealed electrochemical cells or sealed batteries. Next, the current collectors of the cathode and the corresponding anode are made visible (covered by an insulating electrolyte). An electrical contact unit was added in a location where it was not previously installed. Graphite-filled Con A suspension containing a ductiveX Electro-bond62 type resin is dissolved in toluene. Dilution reduced the viscosity of the suspension to approximately 50 Kpcs. Graphite-filled Co This suspension contains an nductiveX Electro-bond 62 type resin. The sealed and cut electrochemical cells and the corresponding battery ends were immersed in graphite. The first ConductiveX Electro-bond 62 type resin The layer has a thickness of approximately 30 μm.

[0193] Then, this first layer was dried at 60°C for 4 hours.

[0194] The electrochemical cell and the corresponding battery terminals, which have been sealed and cut in this manner, are covered with 50% chemicals. Applie filled with % dry extract and copper nanoparticles with a viscosity of 10-20 cP The sample was immersed in Nanotech CU-IJ70 ink. The deposited thickness was 6-8 μm. there were.

[0195] Then, this second layer is dried at 100°C for 30 minutes, and then the lamp and electrical contact unit are installed. With a distance of 2.5 cm between them, a xenon laser was used in a single pulse mode of 2 milliseconds at 2.6 kV. It was sintered by exposure to a lamp.

[0196] Then, the electrical contact unit is immersed in molten Sn-Zn alloy at 40 mass%, and Sn- A third layer based on Zn was formed.

[0197] Then, it is sealed and cut, and the electrochemical cell and corresponding, covered in this third layer, are formed. The battery terminals were immersed in a molten tin sulfonate and boric acid solution at pH 4, maintained at 25°C, for 35 minutes. Immersed. Thus, sealed and cut, and covered, the electrochemical cell and corresponding Pure tin was deposited on the ends of the battery.

Claims

1. An electronic or A contact unit (40) for an electrochemical device, wherein the electronic or electrochemical device The contact unit (40) includes a contact surface (51) that defines an electrical connection area (50). ) are arranged in at least the electrical connection region (50) and filled with electrically conductive particles An electrically charged material, preferably a polymer resin and / or sol-gel compound filled with electrically conductive particles. Materials obtained through this process, and more preferably, polymer resins filled with graphite. A contact unit including the first layer (41).

2. A first layer of a material filled with electrically conductive particles, consisting of metal foil or containing metallic copper. , the contact unit (40) according to claim 1, including a second layer (42, 42').

3. The second layer (42, 42') contains pure tin and / or pure zinc and / or tin-gold The contact unit (40) according to claim 2, comprising a third layer (43) containing a group alloy.

4. The metals in the aforementioned tin-metal alloy are zinc, lead, palladium, gold, copper, and mixtures thereof. The contact unit (40) according to claim 3, which is selected from the above.

5. The third layer (43) is arranged in a fourth layer (44) of pure tin, or silver, palladium, and The contact unit (40) according to claim 3 or 4, comprising a fourth layer of a copper-containing alloy.

6. A contact unit (40) comprising at least one contact unit (40) according to any one of claims 1 to 5, Preferably, an electronic component selected from a capacitor, a battery (1), and a lithium-ion battery. Or electrochemical devices.

7. At least one contact unit (40) of an electronic or electrochemical device such as a battery (1) A method for manufacturing, a. Electronic or electrochemical device including a contact surface (51) that defines the electrical connection area (50) Steps to prepare the s b. At least the electrical connection area (50), preferably at least the contact surface (51 A material in which electrically conductive particles are charged, preferably a high-molecular-weight material filled with electrically conductive particles. A first layer (41) formed from a material obtained by resin and / or sol-gel treatment. A method comprising the step of depositing.

8. After step b, the first layer is filled with electrically conductive particles, polymer resin and / or zo When formed from a material obtained through gel treatment, the drying step, and thereafter, the high portion A claim comprising the step of polymerizing the resin and / or the material obtained by the sol-gel treatment. A method for manufacturing at least one contact unit (40) as described in item 7.

9. After step b of claim 7, or after the polymerization step of claim 8, c. The first layer (41) is coated with a metal foil, or preferably by immersion, an organic copper compound The step of depositing an ink containing copper, preferably in the form of particles, or copper nanoparticles, d. Heat-treating at least the deposited second layer to obtain a conductive layer (42, 42') A method for manufacturing at least one contact unit (40) including a hop.

10. The above method, after step d, coats the electrons with the first and second layers. Or, in at least the electrical connection area (50) of the electrochemical device, pure tin and / or The metal is deposited with zinc and / or tin-metal alloys, and the metals are zinc, lead, palladium, gold, and copper. The method according to claim 9, comprising step e, selected from, and mixtures thereof.

11. The method described above involves coating the first layer, the second layer, and the third layer after step e. In at least the electrical connection region (50) of the electronic or electrochemical device, A layer of pure tin, or a layer of an alloy containing silver, palladium, and copper, is deposited by electrowelding. The method according to claim 10, including step f.

12. The aforementioned metal foils include aluminum foil, copper foil, titanium foil, molybdenum foil, stainless steel foil, and A contact unit according to any one of claims 2 to 5, selected from foil containing metallic copper or The method according to any one of claims 8 to 11.

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