• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Pressurized electrochemical battery and its manufacturing process comprising connectors (1, 2), at least one electrochemical cell (3) with electrical energy collectors (5) that are connected to the connectors (1, 2), comprising the electrochemical cell (3) electrode sheets (13), and solid electrolyte sheets (14) interspersed between the electrode sheets (13), and at least one deformable chamber (4) arranged in contact with the electrochemical cell (3), the deformable chamber (4) being fed with a fluid that deforms the chamber (4) to apply pressure to the electrochemical cell (3). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2745350A1
    申请号:ES201830846
    申请日:2018-08-28
    公开日:2020-02-28
    发明作者:Martinez Manuel Torres
    申请人:Torres Martinez M；
    IPC主号:
    专利说明:

    [0001]
    [0002] PRESSURIZED ELECTROCHEMICAL BATTERY AND MANUFACTURING PROCESS OF THE
    [0003]
    [0004] Technical sector
    [0005]
    [0006] The present invention is related to electrical energy storage systems, specifically to energy storage systems by electrochemical means, proposing a battery with pressurized solid electrolyte and a manufacturing process thereof that optimizes contacts between components and improves its storage and download capacity along with the number of cycles it can support.
    [0007]
    [0008] State of the art
    [0009]
    [0010] The electrochemical battery sector is a sector that has evolved significantly through different technologies and applications. Currently, the greatest reference is found in lithium-ion batteries, mainly due to its large capacity to accumulate energy per unit mass and resistance to multiple charge and discharge cycles.
    [0011]
    [0012] These batteries are made up of a set of components. Among them, the main ones are the electrodes, anode and cathode, and the electrolyte. Usually, the anode is formed by an active material such as graphite and the cathode is formed by another active material such as a lithium oxide, both generally in a sheet format. These materials allow the transfer or accumulation of lithium atoms. The electrolyte is usually a material with a certain charge of a lithium salt, with the capacity for lithium ions to travel in that medium. The principle of operation of the same is that the anode and the cathode are two active materials capable of generating a different reduction potential, which by means of a red-ox reaction when both electrodes are connected and are in contact through an electrolyte which allows the displacement of lithium ions, leads to the generation of an electric current.
    [0013]
    [0014] The shortage of lithium in the earth's crust, as well as other usual materials in Lithium oxides (for example, cobalt) have led to an investigation of alternative materials due to supply or monopoly problems. Against lithium, the simplest alternative would be sodium, alkali metal with a very similar structure, but in opposition to lithium, one of the most abundant on the planet. The use of sodium imposes some conditions on lithium (lower power densities, larger atom size, active materials and different electrolytes, ...) but the principles of action are the same, so it is probably observed as the line of more interesting research to reduce material costs in batteries, especially for stationary applications where the final weight of the battery is not as critical as in mobility applications.
    [0015]
    [0016] In addition to the main components listed above, in the anode and cathode, materials that act as an electrical conductor (aluminum, copper ,.) are usually used, facilitating the contact of the active materials and the conduction of the current generated outwards of the battery A separating material between the anode and cathode is also usually used, especially in the use of liquid electrolytes, since their direct contact can lead to the appearance of chemical reactions that damage the battery. This separator material is usually a microperforated polymer that allows the passage of ions.
    [0017]
    [0018] The management of the temperature of the batteries is also a critical aspect of the technology, since sometimes it is necessary to maintain a specific working temperature to optimize the operation, but you should also avoid situations of thermal control that can lead to the so-called “ thermal runaways ”(thermal packaging), exothermic reactions that damage or even destroy the battery.
    [0019]
    [0020] Within the field of electrolytes, liquid electrolytes already mentioned are usually used, generally based on organic solvents with a certain lithium salt charge. However, these types of electrolytes have a number of disadvantages both in the manufacturing processes and during the operation of the batteries at the level of contact and wear, which result in worse performance and a shorter life. That is why the battery sector is beginning to investigate the use of solid state electrolytes, which eliminate these problems.
    [0021]
    [0022] Today, there is a main drawback in relation to the development of electric batteries using solid electrolytes which is the ability to generate good contact between the active materials and electrolyte. If the contact is not good, the ions have more difficulty getting from one electrode to another and therefore the charge / discharge capacity and even the power density of the battery is reduced.
    [0023]
    [0024] On the other hand, especially in the case of sodium-ion batteries, the displacement of ions from one electrode to another implies significant variations in volume in them, which can lead to problems of deformation and cracking of some components, which lead to damage or Total battery loss.
    [0025]
    [0026] Additionally, in the current battery sector, manufacturing processes focus on the manufacture of small-sized cells, with limited production rates and semi-automatic manufacturing processes. This implies that, in the final scenario, the cost of lithium within a battery is around 2% compared to 65% that can be assumed by the cells as a whole, estimating the manufacturing costs of the cells by an important 35% of the total cost of the battery.
    [0027]
    [0028] The following is an example of a series of documents that show current battery manufacturing procedures, that is, mainly using lithium, liquid electrolytes, and manufacturing processes with a low level of automation.
    [0029]
    [0030] WO2018008682 describes a battery manufacturing process, but which uses a liquid electrolyte in its composition with the complexity that this entails in manufacturing, and the detriment in performance that it entails in operation.
    [0031]
    [0032] Document US2018219252 describes the manufacturing process of a solid electrolyte battery, but which uses lithium in its active materials despite the scarcity of this element, and does not employ a pressure control system exerted between electrolyte and electrode.
    [0033]
    [0034] Document US20020192553 presents a reversible operation sodium ion battery, but whose electrolyte is in a liquid state which hinders the automation of the manufacturing process thereof and reduces its useful life.
    [0035]
    [0036] Document KR101439080 describes a solid electrolyte sodium battery that maximizes the contact area between electrodes and electrolyte to achieve maximum possible performance, but that does not employ additional means to favor such contact and to be able to regulate it during battery operation.
    [0037]
    [0038] Document US2017250406 presents a sodium-ion battery with a metallic sodium anode and a solid ceramic electrolyte conducting sodium ions, but whose efficiency depends largely on the quality of the contact between electrodes and electrolyte and does not use any additional system for favor or maximize it, and requires the addition of a second electrolyte for proper operation.
    [0039]
    [0040] Object of the invention
    [0041]
    [0042] The invention relates to an electrochemical battery with an improved structural embodiment that allows increasing the contact between the active materials of the battery and the electrolyte by improving the performance and electric charge capacity of the battery. Likewise, the invention also relates to a manufacturing process of an electrochemical battery that makes it possible to automate the manufacturing process and achieve high production rates.
    [0043]
    [0044] The pressurized electrochemical battery object of the invention comprises:
    [0045]
    [0046] • anode and cathode connectors,
    [0047] • at least one electrochemical cell with electrical energy collectors that are connected to the connectors, the electrochemical cell comprising:
    [0048] or electrode sheets, and
    [0049] or solid electrolyte sheets interspersed between the electrode sheets, and
    [0050] • at least one deformable chamber arranged in contact with the electrochemical cell, the deformable chamber being fed with a fluid that deforms the chamber to apply pressure to the electrochemical cell.
    [0051]
    [0052] In this way, the deformable chamber fed with the fluid allows to regulate and control the surface contact between the different sheets of the electrochemical cell optimizing the performance of the battery, improving the storage and discharge capacity of the battery, and increasing the number of cycles of load that it can support during its useful life.
    [0053]
    [0054] According to an embodiment of the invention, the battery comprises several electrochemical cells, each cell being pressed between two deformable chambers.
    [0055] Preferably, the electrochemical cells have a cylindrical configuration and are arranged according to a concentric distribution, which allows to optimize the space occupied by the battery and simplify its manufacture.
    [0056]
    [0057] The deformable chambers are connected to a system of fluid supply manifolds, so that through said fluid the pressure exerted by the chambers can be regulated, as well as cooling the battery, which among other factors improves the storage capacity of Battery.
    [0058]
    [0059] Preferably, the manifold system has a drive system to control the inlet flow to the manifold system and a pressure regulator to adjust the pressure inside the deformable chambers.
    [0060]
    [0061] Each electrode sheet comprises two layers of active material and a layer of conductive material, wherein the layers of active material partially cover both sides of the layer of conductive material, the ends of the layer of conductive material protruding from the layers of material active, said protruding part of the conductive material layer being used to obtain the electrical energy collectors of the electrochemical cell that are connected to the battery connectors.
    [0062]
    [0063] According to an exemplary embodiment, the electrode sheets are formed by anode sheets and cathode sheets of the same active material. According to another embodiment, the electrode sheets are formed by anode sheets and cathode sheets of different active materials. That is, some of the electrode sheets are connected to the anode connector and others of the electrode sheets are connected to the cathode connector, said sheets may be of the same material, or of different materials.
    [0064]
    [0065] Preferably the solid electrolyte is of a polymeric, ceramic or composite material.
    [0066]
    [0067] Another object of the invention is a manufacturing process of a pressurized electrochemical battery, comprising the steps of:
    [0068]
    [0069] • use a first coil that has an electrode sheet, a first sheet, superimposed on a solid electrolyte sheet,
    [0070] • use a second coil that has another electrode sheet, a second sheet, superimposed on another solid electrolyte sheet,
    [0071] • use a rotating mandrel on which a deformable chamber is arranged,
    [0072] • alternatively wind the first electrode sheet with the solid electrolyte sheet and the second electrode sheet with the other solid electrolyte sheet onto the deformable chamber,
    [0073] • encapsulate the assembly formed by electrode sheets, solid electrolyte and deformable chamber.
    [0074]
    [0075] In this way, an electrochemical battery manufacturing process is obtained that can be automated, achieving high production rates and therefore minimizing the unit manufacturing cost of the battery.
    [0076]
    [0077] Description of the figures
    [0078]
    [0079] Figure 1 shows a perspective view of a pressurized electrochemical battery according to a preferred embodiment of the invention.
    [0080]
    [0081] Figure 2 shows a longitudinal sectional view of a part of the pressurized electrochemical battery of the previous figure.
    [0082]
    [0083] Figure 3 shows a schematic view of the layers that form an electrode sheet that is disposed on a solid electrolyte sheet.
    [0084]
    [0085] Figure 4 shows a partial view of the electrode sheet of the previous figure.
    [0086]
    [0087] Figure 5 shows a cross-sectional view of a part of the pressurized electrochemical battery of Figures 1 and 2 with continuous electrode sheets.
    [0088]
    [0089] Figure 6 shows a cross-sectional view of a part of the pressurized electrochemical battery of Figures 1 and 2 with discontinuous electrode sheets.
    [0090]
    [0091] Figure 7 shows a perspective view of a machine for carrying out the manufacture of a pressurized electrochemical battery as shown in the embodiment of Figures 1 and 2.
    [0092] Detailed description of the invention
    [0093]
    [0094] Figure 1 shows a pressurized electrochemical battery according to a preferred embodiment of the invention, wherein the battery has a cylindrical configuration, although this configuration is not limiting, the battery being able to take other forms without altering the concept of the invention.
    [0095]
    [0096] In the sectional view of Figure 2 the internal configuration of the preferred embodiment of the battery of Figure 1 is shown. The battery comprises connectors (1,2), or terminals, wherein said connectors are an anode connector ( 1) and a cathode connector (2), through which the electrical energy stored in the battery is charged and discharged.
    [0097]
    [0098] In the preferred embodiment of Figure 2, the battery comprises a set of electrochemical cells (3), where each of the cells (3) is arranged between two deformable chambers (4) that receive a fluid, so that said fluid allows to modify the size of the chambers (4) deforming them, and therefore to press the elements that compose the electrochemical cell (3) to ensure an adequate contact between them.
    [0099]
    [0100] The black arrows in vertical arrangement represented on the electrochemical cells (3) of Figure 2 indicate the direction in which the deformable chambers (4) exert pressure on the cells (3). The other black arrows in Figure 2 indicate the direction of the fluid received by the chambers (4).
    [0101]
    [0102] In the preferred embodiment of Figures 1 and 2, the electrochemical cells (3) have a cylindrical configuration and are arranged according to a concentric distribution, allowing the occupied space to be optimized.
    [0103]
    [0104] Optionally, each of the electrochemical cells (3) individually, or all of them collectively, can be coated with a sealing material or arranged in a sealing encapsulation.
    [0105]
    [0106] Also optionally, there may be internal structural components separating each of the electrochemical cells (3) from the battery.
    [0107] In any case, in its most simplified configuration, the battery would have a single electrochemical cell (3) that on one of its major sides would be arranged in contact with a deformable chamber (4) and on its opposite side would be arranged in contact with a Fixed part of the battery. Preferably said single cell (3) would be arranged between two deformable chambers (4).
    [0108]
    [0109] The electrochemical cells (3) have collectors (5) at each of their ends. The collectors (5) are tied by flanges (6) and are connected to the connectors (1,2) by means of electrical conductors (7). The collectors (5) of one of the ends of the cell (3) are electrically connected to the anode connector (1), and the collectors (5) of the other end of the cell (3) are electrically connected to the cathode connector ( two).
    [0110]
    [0111] Each of the deformable chambers (4) has a fluid inlet and outlet that are connected to a manifold system (8) through which the fluid with which the chambers (4) are fed circulates.
    [0112]
    [0113] Preferably, the fluid with which the chambers (4) are fed is a cooling fluid, so that the deformable chambers have a double function, on the one hand, regulating the pressure applied to the electrochemical cells (3) and, on the other, Cool the battery.
    [0114]
    [0115] Thus, the chambers (4) have both adjustable pressure and temperature, and both can be adjusted according to the specific operating conditions of the battery. The pressure and temperature may be different depending on the state of the battery process: charging, discharging, or resting.
    [0116]
    [0117] By being able to modify the pressure depending on the operating conditions, in addition to improving the contact between the elements that make up the electrochemical cells (3), the battery can adapt to the variations in volume in the cell (3) before the ion exchange that They suffer in loading and unloading processes.
    [0118]
    [0119] Preferably, the manifold system (8) has a drive system (9) and a pressure regulator (10). The drive system (9) is located at the entrance of the collector system (8) and allows controlling the input flow to the collector system (8) and, with it, the temperature of the battery, while the pressure regulator (10) allows to adjust the pressure inside the chambers (4) and, with it, the contact between the elements that make up the cells (3).
    [0120]
    [0121] The electrochemical cells (3) are arranged under vacuum conditions and controlled atmosphere inside the battery. Thus, each of the electrochemical cells (3) is arranged in a defined housing between two deformable chambers (4) that is closed at its ends by lateral covers (11). Said side covers (11) have expansion joints (12) that allow the contractions suffered by the electrochemical cell housings (3) to be absorbed when the chamber fluid (4) deforms them.
    [0122]
    [0123] The electrochemical cells (3) are formed by electrode sheets (13) and solid electrolyte sheets (14), the electrode sheets (13) being interspersed between the solid electrolyte sheets (14).
    [0124]
    [0125] As shown in Figure 3, each electrode sheet (13) comprises two layers of active material (131) and one layer of conductive material (132). The layers of active material (131) are arranged on both sides of the layer of conductive material (132) partially covering them, so that the layer of conductive material (132) protrudes with respect to the layers of active material (131) by their ends, said ends of electric power collectors (5) being connected to the connectors or terminals (1,2) to extract and generate the voltages and current intensities expected in the battery design.
    [0126]
    [0127] Also as shown in Figure 3, the electrode sheet (13) is disposed on the solid electrolyte sheet (14), the ends of the conductive material layer (132) protruding, ie the collectors (5), with with respect to the solid electrolyte sheet (14).
    [0128]
    [0129] The material of the electrode sheets (13) will depend on the final chemistry of the battery, if it is lithium, the active material of the anode could be graphite and the active material of the cathode a lithium oxide (LCO, LNO, NMO, NMC, ...), while, in the case of sodium, electrode sheets (13) could use active materials such as hard carbons in the anode and sodium oxides, Prussian blue or even materials in base
    [0130]
    [0131]
    [0132] Organic as active material in the cathode. In both cases, lithium or sodium metal could also be used for the active material of the anode. The solid electrolyte (14) can be made of a polymeric material, a ceramic material or even a composite.
    [0133]
    [0134] On the other hand, the deformable chambers (4) are made of deformable materials, among which elastomers or even metals such as aluminum can be found in films of limited thickness.
    [0135]
    [0136] The electrode sheets (13) may be continuous, as shown in Figure 5, or they may be discontinuous as shown in Figure 6, so that there is a gap between sheets (13). In this way there will be some flexibility in the deformation of the sheets (13), so that they can slide between them before the application of an internal pressure without suffering mechanical stresses that can damage them.
    [0137]
    [0138] Also, when the electrode sheets (13) that are connected to the anode connector (1) and the electrode sheets (13) that are connected to the cathode connector (2) are made of the same active material, said separation between sheets (13) It is favorable to avoid short circuits.
    [0139]
    [0140] In relation to solid electrolyte sheets (14), depending on the type of electrolyte material, they may have an arrangement of sheets of limited length, as shown in Figure 6, or, if their mechanical properties permit, they may be continuous and deform before the pressure exerted, as shown in Figure 5.
    [0141]
    [0142] Preferably the sheets (13,14) have cavities in the radial direction of the battery through which conduits of an additional fluid with cooling properties are arranged. Said cavities can be connected to an additional system for supplying a liquid or gaseous fluid, so that the flow of said fluid is allowed through said conduits in addition to the fluid flowing through the deformable chambers (4). Using a temperature-tempered fluid controlled by the entire set of cavities and chambers (4), thermal management is achieved that improves the behavior of the battery, avoiding problems related to over-temperature and even allowing the generation of batteries from greater thickness of the set of sheets (13,14), thus increasing its storage capacity.
    [0143] According to the embodiment shown in Figure 2, the manifolds (5) are joined together, preferably by means of welding processes, and grouped by the flanges (6), so that by means of the manifolds (5) the assembly of electrode sheets (13) that form the electrochemical cells (3). In this way, a contact zone will be available in each cell (3) for each connector (1,2). In another alternative configuration (not shown in the figures), a contact area can be provided at each of the lateral ends of the conductive material layer (132) for each of the connectors (1,2).
    [0144]
    [0145] Preferably, the electrical conductors (7) that connect the collectors (5) to the connectors (1,2) are of a flexible material, such that said material tolerates and adapts to the different deformations that the battery undergoes throughout of your operation
    [0146]
    [0147] It is envisioned that the battery has an external encapsulation (15), which acts as a barrier between different batteries that can be arranged in series, so that said encapsulation (15) prevents a battery from being in direct contact with adjacent batteries.
    [0148]
    [0149] Next, the process for manufacturing the cylindrical configuration battery of the preferred embodiment shown in Figures 1 and 2 is described, although it is evident to a person skilled in the art that configuration batteries can be obtained by the described procedure other than cylindrical, without altering the concept of the invention.
    [0150]
    [0151] As shown in figure 7, the battery is manufactured by a winding process, where alternatively electrode sheets (13) and solid electrolyte sheets (14) are superimposed on a deformable chamber (4).
    [0152]
    [0153] For this, a first coil (16) is used that has an electrode sheet (13), a first sheet, superimposed on a solid electrolyte sheet (14), and a second coil (17) that has another electrode sheet ( 13), a second sheet, superimposed on another solid electrolyte sheet (14). The sheet (13) of the first coil (16) will be connected to the anode connector (1) and the other sheet (13) of the second coil (17) will be connected to the cathode connector (2) as will be explained more ahead.
    [0154] On the other hand, on a rotating mandrel (18) the deformable chamber (4) is arranged, and on said deformable chamber (4) the sheets (13,14) of the first and second coils (16,17) are alternately wound. until an electrochemical cell (3) of a desired thickness is obtained on the chamber (4).
    [0155]
    [0156] The electrode sheet (13) superimposed on the solid electrolyte sheet (14) has a configuration as shown in Figure 3, and already described above. Thus, the electrode sheet (13) comprises two layers of active material (131) between which a layer of conductive material (132) is disposed that protrudes with respect to the layers of active material (131).
    [0157]
    [0158] By means of rotary cutting dies (19) the ends of the electrode sheets (13) are partially cut to obtain electric energy collectors (5). For this, the electrode sheets (13) are passed through the dies (19), partially separating the layer of conductive material (132) that protrudes with respect to the layers of active material (131).
    [0159]
    [0160] As shown in detail in Figure 7, the layer of conductive material (132) that protrudes with respect to the layers of active material (131) of the sheet (13) of the first coil (16) is only cut by one of its sides, so that manifolds (5) are defined for connection to the anode connector (1). On the other hand, the layer of conductive material (132) that protrudes with respect to the layers of active material (131) of the sheet (13) of the second coil (17) is cut on the other side, so that they are defined manifolds (5) for connection to the cathode connector (2).
    [0161]
    [0162] After having obtained the electrochemical cell (3), the collectors (5) are flanged and welded together, then the collectors (5) are electrically connected to each other by means of electric conductors (7) and the collectors (5) of one of the ends of the cell (3) are electrically connected to the anode connector (1), and the manifolds (5) of the other end of the cell (3) are electrically connected to the cathode connector (2). Finally, the assembly formed by the electrode sheets (13), solid electrolyte (14) and the deformable chamber (4) is arranged in an encapsulation (15).
    [0163]
    [0164] To obtain a battery with several electrochemical cells (3), as shown in Figure 2, prior to encapsulation and the connection and electrical connection of the collectors (5),
    [0165]
    [0166]
    [0167] several sets of electrode sheets (13), solid electrolyte (14) and deformable chambers (4) are wound, said sets being wound on each other according to a concentric distribution.
    [0168]
    [0169] To obtain the coils (16.17), first, an automatic unwind of a layer of conductive material (132) is used, such as aluminum, copper or other more advanced material, such as lithium-aluminum alloys, which a coating application system will be conducted to cover the conductive material layer (132) with active material layers (131).
    [0170]
    [0171] Said layers of active material (131) can be applied by means of printing systems, electrostatic adhesion, or by any other method of coating or priming layers, even being able to consist of a layer of active material (131) such as sodium or lithium in metallic format. In this way the electrode sheet (13) is obtained.
    [0172]
    [0173] Next, a solid electrolyte coating is applied on the electrode sheet (13), said coating being able to be applied on one or both sides of the electrode sheet (13). In this way the electrode sheet (13) is obtained with the solid electrolyte sheet (14). Preferably the solid electrolyte sheet (14) is applied from a coil of solid electrolyte material.
    [0174]
    [0175] In one configuration of the invention, the electrode sheets (13) and solid electrolyte (14) are cut before winding them on the deformable chamber (4). In another configuration of the invention, the electrode sheet (13) is cut, but leaving the solid electrolyte sheet (14) uncut. In another configuration no cuts are made in the sheets (13,14), so that the sheets wound on the deformable chamber (4) are continuous instead of having limited lengths.
    [0176]
    [0177] The development of the process described for the manufacture of the coils (16.17) will be carried out in installations with a controlled atmosphere, preferably with a relative humidity of less than 0.01%, and preferably with a pressurized atmosphere that prevents leakage into the interior with the consequent possible moisture ingress into the enclosure. In an alternative configuration, the development of the described process will be carried out in high vacuum installations to achieve the appropriate working conditions.
    [0178] The application of the solid electrolyte isolates mainly the active materials of the outside atmosphere and therefore this process could be carried out in an environment without the need of special requirements as demanding as controlled atmosphere as in the case of active materials.
    [0179]
    [0180] The rotary mandrel (18) is expandable, or of variable dimension, so that it accommodates the different deformable chambers (4) concentrically optimally. In this way, using the same mandrel (18) batteries can be manufactured with cells (3) of different internal diameters.
    [0181]
    [0182] In a preferred configuration of the manufacturing process, the mandrel temperatures (18) and material are managed in a controlled manner so that through controlled thermal expansion the final adjustments and contacts between components are more precise.
    [0183]
    [0184]
    one
    权利要求:
    Claims (15)
    [1]
    1 Pressurized electrochemical battery characterized by:
    • connectors (1,2),
    • at least one electrochemical cell (3) with electric energy collectors (5) that are connected to the connectors (1,2), the electrochemical cell (3) comprising: or electrode sheets (13), and
    or solid electrolyte sheets (14) interspersed between the electrode sheets (13), and
    • at least one deformable chamber (4) arranged in contact with the electrochemical cell (3), the deformable chamber (4) being supplied with a fluid that deforms the chamber (4) to apply pressure to the electrochemical cell (3).
    [2]
    2. - Pressurized electrochemical battery according to claim 1, characterized in that it comprises several electrochemical cells (3), each cell (3) being arranged pressed between two deformable chambers (4).
    [3]
    3. - Pressurized electrochemical battery according to the preceding claim, characterized in that the electrochemical cells (3) have a cylindrical configuration and are arranged according to a concentric distribution.
    [4]
    4. - Pressurized electrochemical battery according to any one of the preceding claims, characterized in that each of the electrochemical cells (3) is arranged in a defined housing between two deformable chambers (4) that is closed at its ends by side covers (11) that have expansion joints (12).
    [5]
    5. - Pressurized electrochemical battery according to any one of the preceding claims, characterized in that the deformable chambers (4) are connected to a system of manifolds (8) for supplying the fluid.
    [6]
    6. - Pressurized electrochemical battery, according to the preceding claim, characterized in that the manifold system (8) has a drive system (9) to control the inlet flow to the manifold system (8) and a pressure regulator (10 ) to adjust the pressure inside the deformable chambers (4).
    [7]
    7. - Pressurized electrochemical battery according to any one of the preceding claims, characterized in that each electrode sheet (13) comprises two layers of active material (131) and one layer of conductive material (132), wherein the layers of material active (131) partially cover both sides of the conductive material layer (132), the ends of the conductive material layer (132) protruding from the active material layers (131).
    [8]
    8. - Pressurized electrochemical battery according to any one of the preceding claims, characterized in that the electrode sheets (13) are formed by anode sheets and cathode sheets of the same active material.
    [9]
    9. - Pressurized electrochemical battery according to any one of claims 1 to 7, characterized in that the electrode sheets (13) are formed by anode sheets and cathode sheets of different active materials.
    [10]
    10. - Pressurized electrochemical battery according to any one of the preceding claims, characterized in that the solid electrolyte is made of a polymeric, ceramic or composite material.
    [11]
    11. - Pressurized electrochemical battery according to any one of the preceding claims, characterized in that the electrical conductors (7) are flexible.
    [12]
    12. - Pressurized electrochemical battery according to any one of the preceding claims, characterized in that through the sheets (13,14) conduits of an additional fluid with cooling properties are arranged.
    [13]
    13. - Manufacturing process of a pressurized electrochemical battery according to any one of the preceding claims, characterized in that it comprises:
    • use a first coil (16) having an electrode sheet (13) superimposed on a solid electrolyte sheet (14),
    • use a second coil (17) that has another electrode sheet (13) superimposed on another solid electrolyte sheet (14),
    • use a rotating mandrel (18) on which a deformable chamber (4) is arranged,
    • wind the electrode sheet (13) alternately on the deformable chamber (4) with the solid electrolyte sheet (14) and the other electrode sheet (13) with the other solid electrolyte sheet (14),
    • encapsulate the assembly formed by electrode sheets (13), solid electrolyte (14) and deformable chamber (4).
    [14]
    14. - Manufacturing process according to the preceding claim, characterized in that several assemblies formed by electrode sheets (13), solid electrolyte (14) and deformable chamber (4) are wound prior to encapsulation, said assemblies being wound on each other. according to a concentric distribution.
    [15]
    15. - Manufacturing process according to any one of claims 13 to 14, characterized in that rotary cutting dies (19) are used that partially cut the ends of the electrode sheets (13) to obtain electric energy collectors ( 5).
    one
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    同族专利:
    公开号 | 公开日
    ES2745350B2|2021-11-16|
    US20210167414A1|2021-06-03|
    US11211634B2|2021-12-28|
    US20200075987A1|2020-03-05|
    JP2020064848A|2020-04-23|
    KR20200024724A|2020-03-09|
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    US16/148,504| US11211634B2|2018-08-28|2018-10-01|Pressurized electrochemical battery and process for manufacturing the same|
    KR1020190104417A| KR20200024724A|2018-08-28|2019-08-26|Pressurized electrochemical battery and process for manufacturing the same|
    JP2019155054A| JP2020064848A|2018-08-28|2019-08-27|Pressure electrochemical battery and manufacturing method of the same|
    US17/176,817| US20210167414A1|2018-08-28|2021-02-16|Pressurized electrochemical battery and process for manufacturing the same|
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