JP3232116U - Multi-axis electricity supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-axis electric supply system extending in the x-axis, y-axis, and z-axis directions by simply connecting a plurality of electric supply elements for increasing the volumetric energy density. A multi-axis electrical supply system in which a plurality of electrical supply elements 10 are electrically connected to each other both in series and in parallel to form an array in the triaxial direction. Each has two current collectors 14, two active material layers 12 and 13 arranged between the two current collectors, an electrolyte system impregnated in the active material layer, and two current collectors. Includes an electrical supply element, including a sealing layer 16 arranged between the edges of the two current collectors in order to adhere and seal the electrolyte system between the two current collectors without leaking. Each of the is an independent complete module, comprising a patterned metal layer that connects to electrical supply elements in the x-axis and y-axis directions to form electrical connections in series or in parallel. [Selection diagram] Fig. 1

Description

The present invention relates to an electrical supply system, in particular a multi-axis that can be used very effectively in practice, forming both series and parallel connections in the x-axis, y-axis, and z-axis directions. Regarding the electricity supply system.

In recent years, as air pollution has increased and global warming has increased, there are high expectations that electric vehicles will replace existing combustible fuel vehicles to reduce the harmful effects of carbon dioxide on the environment. Today, battery systems are still the cornerstone of pure electric vehicles. A battery system for an electric vehicle is formed by several battery cells that are connected in series, in parallel, or in combination with each other to achieve the capacity and voltage required for the electric vehicle.

The most common practice is to connect multiple battery elements in parallel with each other. The case is then used to bundle the battery elements to form a battery cell. Conductive leads exposed from the case are used and electrically connected in series to achieve a voltage high enough to form a battery system for electric vehicles.
Another method is to use a case to accommodate multiple battery elements. The inside of the case is filled with electrolyte. Battery elements are internally connected in series with each other to increase the voltage. Conductive leads are then connected externally in parallel to achieve sufficient capacity to form a battery system for electric vehicles.
However, the maximum permissible voltage of the electrolyte is usually only 5V. As a result of being connected in series internally, the voltage increases, but the electric field distribution is not uniform due to the internal structure and arrangement. Therefore, when the voltage exceeds the maximum permissible voltage, electrolyte decomposition occurs, causing the battery system to fail, and more seriously, the voltage can cause the battery system to explode. Therefore, there is no similar product on the market.

Regardless of the above method, the voltage is limited by structural problems of the battery cell and the internal battery unit. External series connections are required to achieve sufficient voltage to form the battery system when parallel connections are adopted inside the battery cells. Also, an external parallel connection is required to achieve a sufficiently high capacity to form a battery system when a series connection is adopted inside the battery cell.
External connections typically use wire bonding, metal leads, or metal bars, which can increase the resistance of the battery system, reduce performance, and reduce reliability and safety. Moreover, the volumetric energy density is reduced due to the space occupied by the external connections. Moreover, the external connections described above are complex. The manufacturing cost of the battery system increases and the reliability decreases.

An object of the present invention is to provide a multi-axis electrical supply system to overcome the above-mentioned drawbacks. Multiple electrical supply elements are simply connected to form a multi-axis electrical supply system that extends in the x-axis, y-axis, and z-axis directions to increase volumetric energy density.

Another object of the present invention is to provide a multi-axis electrical supply system composed of electrical supply elements simply connected in the triaxial direction. Arrays of series or parallel connections, or combinations, are achieved according to requirements. Therefore, the manufacturing cost and difficulty of the connection is significantly reduced and the process yield is increased. Also, the internal resistance of the electricity supply system is greatly reduced.

To implement the above, the present disclosure extends in the x-axis, y-axis, and z-axis directions to form an array of series or parallel connections in three axial directions, or a combination of arrays. A multi-axis electrical supply system composed of electrical supply elements is disclosed. Each electricity supply element includes a separator, two active material layers, two current collectors, an electrolyte system, and a sealing layer. The active material layers are arranged on both sides of the separator, and the current collectors are arranged outside the active material layer, respectively. The electrolyte system is impregnated inside the active material layer, a sealing layer is placed between the edges of the two current collectors, the two current collectors are attached, and the electrolyte system is sealed between the two current collectors. To do. In other words, each electricity supply element is an independent and complete module, and the electrolyte system does not circulate between each electricity supply element. Rather than an electrochemical reaction between adjacent electrical supply elements, only the charge is transferred. Therefore, both series connection and parallel connection can be performed without being limited by the maximum allowable voltage of the electrolyte system.

Also, adjacent electrical supply elements are brought into direct contact via their current collectors to form electrical connections in the z-axis direction and utilize the patterned metal layer in the x-axis direction and In the y-axis direction, it connects to an electrical supply system to form electrical connections in series, in parallel, or in combination. Therefore, the multi-axis electrical supply system is extended in the x-axis, y-axis, and z-axis directions to effectively use the occupied space. The manufacturing cost and difficulty of the connection is significantly reduced. It also greatly reduces the internal resistance of the electricity supply system and increases the volumetric energy density.

The scope of applicability of the present invention will be further clarified from the detailed description provided herein. The detailed description and examples show preferred embodiments of the present invention, but are presented for illustration purposes only, and various changes and modifications that fall within the spirit and scope of the present invention are described in this detail. Please understand that the explanation will be clear to those skilled in the art.

The present invention is more fully understood from the detailed description set forth herein by way of example only, but this is not a limitation of the present invention.

A cross-sectional view of the electricity supply element of the multi-axis electricity supply system of the present invention is illustrated. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the x-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the x-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the x-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the x-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the y-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the y-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the y-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the y-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the z-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the z-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the z-axis direction. Illustrates a multi-axis electrical supply system of the present invention showing electrical supply elements connected in the z-axis direction. An embodiment of the multi-axis electric supply system of the present invention will be illustrated. An embodiment of the multi-axis electric supply system of the present invention will be illustrated. An embodiment of the multi-axis electric supply system of the present invention will be illustrated. An embodiment of the multi-axis electric supply system of the present invention will be illustrated. Another embodiment of the multi-axis electrical supply system of the present invention will be illustrated.

The present invention is composed of a plurality of electrical supply elements connected in the x-axis, y-axis, and z-axis directions, and achieves electrical connection in series, in parallel, or in combination to achieve electrical connection in three axial directions. Provides a multi-axis electricity supply system that extends to. Each electricity supply element is an independent and complete module, and the electrolyte system is not shared between adjacent electricity supply elements.
First, the electricity supply elements are disclosed by the following detailed description and accompanying drawings.

FIG. 1 illustrates a cross-sectional view of an electricity supply element of the multi-axis electricity supply system of the present invention. The electricity supply element 10 of the present invention includes a separator 11, two active material layers 12, 13, two current collectors 14, 15, an electrolyte system, and a sealing layer 16. The material of the separator 11 is selected from polymer materials, ceramic materials, or glass fibers. Further, the separator 11 has a hole that enables ion movement. The pores are formed of through holes, ant holes, or porous materials. The ceramic material may be a ceramic insulating material selected from _{TiO 2} , Al ₂ O ₃ , SiO ₂ fine particles, or alkylated ceramic particles having a nanometer or micrometer scale.
The ceramic material may also be an oxide-based solid electrolyte such as a lithium lanthanum zirconium oxide (LLZO) electrolyte, a lithium aluminum titanium phosphate (LATP) electrolyte, or a derivative thereof. .. The ceramic material may be mixed with the above-mentioned ceramic insulating material and the above-mentioned oxide-based solid electrolyte. The separator 11 is polyvinylidene fluoride (PVDF), polyvinylidene fluoride co-hexafluoropropylene, PVDF-HFP, polytetrafluoroethylene, Polytetrafluoroethylene, polytetrafluoroethylene, polytetrafluoroethylene (Polytetrafluoroethylene) It may further contain a polymer adhesive such as polyethylene oxide (Polyvinylidene fluoride, PEO), polyacrylonitrile (PAN), or polyimide (Polyimide, PI).

The active material layers 12 and 13 are arranged on both sides of the separator 11, respectively, and the electrolyte system is impregnated therein. The electrolyte system is a solid electrolyte, a liquid electrolyte, a gel electrolyte, or a combination thereof. Therefore, discharge, which is a process of converting chemical energy into electrical energy, and charging, which is a process of converting electrical energy into chemical energy, may be performed. Ion transfer and transfer is achieved. The electric charge is carried through the current collectors 14 and 15 arranged outside the active material layers 12 and 13, respectively. The materials of the current collectors 14 and 15 are copper (Cu), aluminum (Al), or nickel (Ni), tin (Sn), silver (Ag), gold (Au), or at least one of the above-mentioned materials. Selected from alloys composed of.

The material of the sealing layer 16 is epoxy resin, polyethylene (Polyethylene, PE), polypropylene (Polypolyrene, PP), polyurethane (Polyurethane, PU), thermoplastic polyimide (Thermoplastic polyimide, TPI), silicon, acrylic resin, ultraviolet curable adhesive. It may be an agent or a combination thereof.
The sealing layer 16 is placed between the edges of the two current collectors 14 and 15, the two current collectors 14 and 15 are attached, and the electrolyte system is sealed between the two current collectors 14 and 15. To avoid leaks and prevent circulation between adjacent electrical supply elements 10. Therefore, the electrical supply element 10 is an independent complete power supply module that directly uses the current collectors 14, 15 and the sealing layer 16 as a package structure.

The electrical supply elements 10 are simply connected to form a multi-axis electrical supply system 60 extending in the x-axis, y-axis, and z-axis directions to form a series, parallel, or combined array. Achieve. The connection on each axis will be disclosed in the following detailed description.

See FIG. 2A. The electrical supply elements 10 may be connected in series along the x-axis direction via a patterned metal layer 70. Alternatively, the patterned metal layer 70 may connect the electrical supply elements 10 of the same polarity to form a parallel connection (see FIG. 2B).
The two sets of series-connected electrical supply elements 10 illustrated in FIG. 2A are further connected in parallel along the x-axis direction via a patterned metal layer 70 (see FIG. 2C) in series and in series. They may be connected in parallel at the same time.
Further, the two sets of parallel connection electric supply elements 10 illustrated in FIG. 2B are further connected in series along the x-axis direction via the patterned metal layer 70 (see FIG. 2D) in series. And they may be connected in parallel at the same time. On the other hand, the patterned metal layer 70 serves as an internal connection that forms an electrical connection in these embodiments.

See FIG. 3A. The electrical supply elements 10 may be connected in series along the y-axis through the patterned metal layer 70, or the patterned metal layers 70 connect the electrical supply elements 10 of the same polarity. (See FIG. 3B).
The two sets of series-connected electrical supply elements 10 illustrated in FIG. 3A are further connected in parallel along the y-axis direction via a patterned metal layer 70 (see FIG. 3C) in series and in series. They may be connected in parallel at the same time.
Further, the two sets of parallel connection electric supply elements 10 illustrated in FIG. 3B are further connected in series along the y-axis direction via the patterned metal layer 70 (see FIG. 3D) in series. And they may be connected in parallel at the same time. On the other hand, the patterned metal layer 70 serves as an internal connection that forms an electrical connection in these embodiments.

See FIG. 4A. The electrical supply elements 10 may be connected in series along the z-axis direction via direct contact. Alternatively, the electric supply elements 10 having the same polarity may be connected in a vertically stacked relationship to form a parallel connection (see FIG. 4B).
Several sets of series-connected electrical supply elements 10, illustrated in FIG. 4A, are stacked one on top of the other or in parallel along the z-axis direction via a conductive wire such as a patterned metal layer 70. Further connections (see FIG. 4C) may be made and connected in series and in parallel at the same time.
Also, several sets of parallel connection electrical supply elements 10, illustrated in FIG. 4B, are further connected in series along the stacked z-axis directions (see FIG. 4D) and simultaneously in series and in parallel. You may connect. In these embodiments, the patterned metal layer 70 serves as an internal connection for forming an electrical connection between the electrical supply elements 10 in the x- and y-axis directions. The patterned metal layer 70 may also be utilized to electrically connect several electrical supply elements 10 stacked in the z-axis direction.

The current collectors 14 and 15 described above may further have electrode tabs for forming good electrical connections by contact or welding after folding or by conductive connections. Electrical connections are well known in the art.
A major feature of the present invention is the stacking of electricity supply elements 10 in the x-axis, y-axis, and z-axis directions. Therefore, further description will be omitted.

Therefore, due to the outermost layer of the electricity supply elements 10, current collectors 14 and 15 are present and the electricity supply elements 10 are connected to each other via direct contact of the current collectors 14 and 15 to z-. Form a series or parallel connection in the axial direction. For extension in the x-axis and y-axis directions, a patterned metal layer 70 is used to connect the electrical supply elements 10.
The patterned metal layer 70 may be a single metal layer, a single layer PCB (printed circuit board), or a double-sided PCB. When using a double-sided PCB, the metal layer on the other side, which is not used for series or parallel connection of the electricity supply element 10, is the monitoring or management circuit of the multi-axis electricity supply system 60, or the control circuit of the extension element. Alternatively, it may be used to additionally arrange a monitoring circuit or the like. When utilizing a single metal layer, the patterned metal layer 70 is a multi-axis electrical supply system to enhance the structural strength to support or by using a unique material such as a high thermal conductivity material. Includes auxiliary materials to improve the heat dissipation efficiency of 60.

In the above-described embodiment, the electric supply elements 10 connected in series, in parallel, or in combination are defined as a group of electric supply elements.
See FIG. 5A. As disclosed in FIG. 2B, a plurality of electric supply element groups connected in parallel along the x-axis direction are connected and repeatedly arranged along the y-axis direction to form a multi-axis electric supply system 60. To form. For example, in FIG. 5A, three electrical supply element groups are connected. Then, the patterned metal layer 70 is used to form a parallel connection in the y-axis direction. Further, a plurality of multi-axis electrical supply systems 60 disclosed in FIG. 5A may be extended and connected in series along the x-axis direction as shown in FIG. 5B.

See FIG. 5C. To form the multi-axis electrical supply system 60, a plurality of electrical supply element groups connected in parallel along the z-axis direction as disclosed in FIG. 4B are connected along the x-axis and y-axis directions. Iteratively arranged and connected via a patterned metal layer 70 to form parallel connections in the x- and y-axis directions, respectively.
See also FIG. 5D. To form the multi-axis electrical supply system 60, a plurality of electrical supply element groups connected in series along the z-axis direction as disclosed in FIG. 4A are connected along the x-axis and y-axis directions. Iteratively arranged and connected via a patterned metal layer 70 to form a series connection in the x-axis and y-axis directions, respectively. As mentioned above, the patterned metal layer 70 serves as an electrical connection utilized to electrically connect the electrical supply elements 10 or groups of electrical supply elements. Electrical connections are well known in the art.
The main feature of the present invention is to arrange the electric supply elements 10 in the multi-axis direction. Therefore, further description will be omitted. Depending on the arrangement of the electrical supply elements 10 in the multi-axis direction, the patterned metal layer 70 serves as an internal connection that forms an electrical connection between the electrical supply elements 10 or between the electrical supply element groups. Fulfill. In order to output electric power, the multi-axis electric supply system 60 has a positive electric terminal 81 which is an output positive terminal of the multi-axis electric supply system and a negative electric terminal 82 which is an output negative terminal of the multi-axis electric supply system 60. including. The positive electrical terminal 81 has a center point (Xc, Yc, Zc), and the negative electrical terminal 82 has a center point (Xa, Ya, Za), and Xc ≠ Xa, Yc ≠ Ya, Zc ≠. Za, or a combination thereof. This means that the positive electrical terminal 81 and the negative electrical terminal 82 may be located on the same side or different sides.

As shown in FIG. 5D, the positive electrical terminal 81 and the negative electrical terminal 82 may be directly connected to the current collectors 14, 15 or the patterned metal layer 70 of each electrical supply element 10. Further, the positive electric terminal 81 and the negative electric terminal 82 may extend from the current collectors 14, 15 or the patterned metal layer 70.

The above description or illustration in FIGS. 5A-5D is merely an example and is not limited to the connection of the multi-axis electrical supply system 60. Any extension in the x-axis, y-axis, and z-axis directions that form the multi-axis electrical supply system 60 using series, parallel, or combinations all fit the scope of the present invention.

Then refer to FIG. The external package 50 is used to seal the multi-axis electrical supply system 60. The outer package 50 may be a polymer film that avoids short circuits, or may be a well-known aluminum foil or a well-known metal can. Further, the external package 50 is filled with a coolant to improve heat dissipation efficiency.
As shown in FIG. 6, the gap between the groups of electrical supply elements in the x- and y-axis directions can serve as a path for the cooling airflow. If it is expected that more electrical supply elements 10 in series or in parallel will generate more heat during operation, cooling pipes or cooling systems may also be provided in the gap. The heat generated by the operation is smoothly dissipated, and as a result, the multi-axis electric supply system 60 maintains normal operation.
Further, the external package 50 has a substantially rectangular parallelepiped shape in FIG. According to practice, the external package 50 can be adjusted according to the available installation space of the electric vehicle, for example when applied to an electric vehicle. Therefore, by flexibly arranging the internal electricity supply elements 10, it is possible to use the entire available installation space as a battery storage space to increase the battery capacity of the multi-axis electricity supply system 60.

According to the above-described embodiment, _{when the electric supply element 10 of N 1} × N ₂ × N ₃ is used, the multi-axis electric supply system 60 is an electric supply element of _{N 1 arranged in the z-axis direction, x.} Understood that it includes a group of electricity supply elements stacked on the z-axis of _{N 2} arranged in the −-axis direction and a group of electricity supply elements stacked on the z-axis of _{N 3 arranged in the y-axis direction.} it can.
In the z-axis direction, adjacent electricity supply elements come into direct contact with each other through their current collectors to form a group of electricity supply elements stacked on the z-axis. The _{electricity supply element groups stacked on the z-axis of N 2} are arranged side by side along the x-axis direction, and the electricity supply element groups stacked on the z-axis of _{N 3 are arranged side by side in the y-axis direction.} Will be done. Each of N ₁ , N ₂ , and N ₃ is a natural number greater than or equal to 2.

Under this structure, when a metal needle pierces the multi-axis electrical supply system 60, _{instead of piercing all 10 of the N 1} x N ₂ x N ₃ electrical supply elements vertically, a smaller number of vertically stacked. Only the electricity supply element 10 is pierced. Therefore, the risk of vertically piercing a large number of vertically stacked series electrical supply elements is reduced.

Therefore, the multi-axis electricity supply system of the present invention is composed of a plurality of electricity supply elements, which are independent and complete modules. Structures with high capacity and high voltage are simplified and easy to manufacture for mass production. Therefore, the reliability, volumetric energy density, and safety of the electricity supply system are significantly improved.

Moreover, since the electricity supply elements are independent and complete modules, the electrolyte system of each electricity supply element does not circulate between the electricity supply elements. Therefore, charge transfer occurs between adjacent electrical supply elements without an electrochemical reaction, ie, without ion transfer and ion transport. Electrolyte decomposition does not occur as a result of high voltage, improving safety. In addition, the current collectors of adjacent electricity supply elements are brought into direct contact with each other to form an electricity supply element group. The resistance of the entire structure is very low, achieving excellent charge / discharge speed efficiency and low heat generation. Therefore, the heat dissipation mechanism can be simplified. The entire system is easy to manage and control.

Having described the present invention in this way, it will be clear that the present invention may be implemented in many other ways. Such modified forms should not be considered to deviate from the spirit and scope of the present invention, and all such modifications as apparent to those skilled in the art are within the scope of the following utility model registration claims. Is intended to be included in.

Claims (11)

It is a multi-axis electricity supply system
A plurality of electrical supply elements electrically connected to each other both in series and in parallel to form an array in the triaxial direction, each of the electrical supply elements being two current collectors and the two. Two active material layers arranged between the current collectors, an electrolyte system impregnated in the active material layer, and the two current collectors are adhered between the two current collectors. Each of the electrical supply elements is an independent complete module, including a sealing layer arranged between the edges of the two current collectors to seal the electrolyte system without leaking. , The electrolyte system of each said electricity supply element does not circulate between each said electricity supply element, and charge transfer occurs between the adjacent said electricity supply elements without an electrochemical reaction, in the z-axis direction. With a plurality of electrical supply elements in close contact with each other directly through the current collectors to form an electrical connection in series or in parallel.
A patterned metal layer that connects to the electrical supply element in the x-axis and y-axial directions to form electrical connections in series or in parallel.
Multi-axis electricity supply system. The multi-axis electrical supply system according to claim 1, wherein the electrolyte system is a gel electrolyte, a liquid electrolyte, a solid electrolyte, or a combination thereof. The multi-axis electrical supply system according to claim 1, wherein the electrical supply element further includes a separator disposed between the two active material layers. The multi-axis electrical supply system according to claim 1, wherein the patterned metal layer is a metal layer of a printed circuit board (PCB). The multi-axis electrical supply system according to claim 1, wherein the patterned metal layer contains an auxiliary material. The multi-axis electrical supply system according to claim 1, further comprising an external package for sealing the electrical supply element. The multi-axis electrical supply system according to claim 6, wherein the external package is filled with a coolant. It is a multi-axis electricity supply system
Two current collectors, and the a two electrochemical system disposed between the current collector and electrical supply element of N ₁ each containing a z- axis direction, the electric supply element adjacent, they To form a group of electricity supply elements stacked on the z-axis by directly contacting through the current collector of the above, N ₁ is an electric supply element of _{N 1} which is a natural number of 2 or more.
A group of electricity supply elements stacked _{along the z-axis of N 2} arranged side by side along the x-axis direction _{, where N 2} is a natural number of 2 or more and is an electricity supply stacked on the z-axis of _{N 2.} Element groups and
y- is arranged along the axial direction, an electrical supply element group stacked in z- axis of N _3, N ₃ is an electrical supply stacked in z- axis of N ₃ is a natural number of 2 or more Element groups and
The positive electrical terminal, which is the output positive terminal of the electricity supply system,
A negative electrical terminal, which is an output negative terminal of the electrical supply system, is provided.
Multi-axis electricity supply system. The multi-axis electrical supply system according to claim 8, wherein the adjacent electrical supply elements are in direct contact with each other through the current collectors to form an electrical connection in series or in parallel. Each of the electrical supply elements adheres the two current collectors to seal the electrochemical system between the two current collectors without leaking. The multi-axis electrical supply system according to claim 8, further comprising a sealing layer arranged between the two. The positive electrical terminal has a center point (Xc, Yc, Zc) and the negative electrical terminal has a center point (Xa, Ya, Za), Xc ≠ Xa, Yc ≠ Ya, Zc ≠. The multi-axis electrical supply system according to claim 8, characterized in that it is Za or a combination thereof.

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