AU2021101083A4

AU2021101083A4 - Multiaxial Electricity Supply System

Info

Publication number: AU2021101083A4
Application number: AU2021101083A
Authority: AU
Inventors: Szu-Nan Yang
Original assignee: Prologium Holding Inc; Prologium Technology Co Ltd
Current assignee: Prologium Holding Inc; Prologium Technology Co Ltd
Priority date: 2020-03-23
Filing date: 2021-03-01
Publication date: 2021-04-29
Anticipated expiration: 2029-03-01
Also published as: JP3232116U; TWM600007U; KR20210002190U; KR200497763Y1; DE202021100959U1

Abstract

OF THE DISCLOSURE A multiaxial electricity supply system is composed of a plurality of electricity supply elements, which are independent and complete module. The electrolyte system of each electricity supply element does not circulate therebetween. There only have charges trans 5 ferred rather than electrochemical reactions between the adjacent electricity supply ele ments. Therefore, the electrolyte decomposition would not occur result from the high volt age caused by connecting together. Also, the current collectors are connected by directly contacting to the patterned metal layer to form both series and parallel connection in the x-axis, y-axis and z-axis directions for greatly effective in practical use. 10 15 1/12 C%4 - -U # •L o \O

Description

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P/00/009 Regulation 3.2 AUSTRALIA Patents Act 1990

INNOVATION SPECIFICATION FOR AN INVENTION ENTITLED

Invention title: Multiaxial Electricity Supply System

Name of Applicant: Prologium Technology Co., Ltd, and Prologium Holding Inc

Address for Service A.P.T. Patent and Trade Mark Attorneys PO Box 833 Blackwood, S.A. 5051

The invention is described in the following statement:

I- MULTIAXIAL ELECTRICITY SUPPLY SYSTEM BACKGROUND OF THE INVENTION

Field of Invention

The present invention relates to an electricity supply system, in particular to a multiax ial electricity supply system to form both series and parallel connection in the x-axis, y-axis and z-axis directions for greatly effective in practical use.

Related Art

In recent years, with the increase of air pollution and global warming, electric vehicles have been given high expectations to replace existing combustible fuel vehicles to reduce the environmentally harmful effects of carbon dioxide. At present, the battery system is still the key point of the pure electric vehicles. The battery system for the electric vehicles is formed by several battery cells, connected to each other in series, in parallel or the combi nations to achieve necessary capacity and voltage for the electric vehicles.

In the most common practice, a plurality of battery elements are connected to each other in parallel. Then a case is used to pack the battery elements to form the battery cell. The conductive lead exposed from the case is used to be externally connected in series to achieve a high enough voltage to form the battery system for the electric vehicles. Alter native method is using the case to house a plurality of battery elements. The electrolyte is filled within the case. The battery elements are internally connected to each other in series to increase the voltage. Then the conductive lead is used to be externally connected in par allel to achieve enough capacity to form the battery system for the electric vehicles. How ever, the maximum permissible voltage of the electrolyte is usually 5V only. The voltage is increased result from the internally connected in series. And, the electric field distribu tion is not uniform due to the internal structure and arrangement. Once the voltage is over the maximum permissible voltage, the electrolyte decomposition would be occurred to make the battery system fail. More seriously, it may cause the battery system explosion.

Therefore, there does not have similar products on the market.

Regardless of the above method, it is limited by the structural problems of the battery cell and the internal battery unit. The external connection in series is necessary to achieve enough voltage to form the battery system when the connection in parallel within the bat tery cell is adapted. Also, the external connection in parallel is necessary to achieve enough high capacity to form the battery system when the connection in series within the battery cell is adapted. The external connection is usually used the wire bonding, the metal lead, or the metal bar, which may increase the resistance of the battery system and lower the per formance, and reliability and safety are reduced. Moreover, the volumetric energy density would be decreased due to the space occupied by the external connection. Furthermore, the above-mentioned external connection is complicated. The manufacturing costs of the bat tery system are increased and the reliability is decreased.

SUMMARY OF THE INVENTION

It is an objective of this invention to provide a multiaxial electricity supply system to overcome the forgoing shortcomings. A plurality of electricity supply elements are simply connected to form the multiaxial electricity supply system extended in the x-axis, y-axis and z-axis directions to increase volumetric energy density.

Also, it is another objective of this invention to provide a multiaxial electricity supply system composed of the electricity supply elements, which are simply connected in the three-axis directions. The arrangement of series or parallel connection or the combination is achieved based on the requirement. Therefore, the manufacturing costs and difficulty of connection are significantly reduced, and the process yield is enhanced. Also, the internal resistance of the electricity supply system is greatly reduced.

In order to implement the abovementioned, this invention discloses a multiaxial elec tricity supply system composed of the electricity supply elements, which are extended in the x-axis, y-axis and z-axis directions to form an arrangement of series or parallel connec tion or the combination in the three-axis directions. Each electricity supply element in cludes a separator, two active material layers, two current collectors, an electrolyte system and a sealing layer. The active material layers are disposed on the two sides of the separator, respectively, and the current collectors are disposed on outer sides of the active material layers, respectively. The electrolyte system is impregnated within the active material layers, and the sealing layer is disposed between the edges of the two current collectors to adhere the two current collectors and seal the electrolyte system therebetween. In other word, each electricity supply element is an independent and complete module and the electrolyte system does not circulate therebetween. There only have charges transferred rather than electrochemical reactions between the adjacent electricity supply elements. Therefore, both series and parallel connection could be made without being limited by the maximum per missible voltage of the electrolyte system.

Also, the adjacent electricity supply elements are directly contacted via their current collectors to form electrical connection in the z-axis direction, and a patterned metal layer is utilized to connect to the electricity supply elements in the x-axis direction and the y-axis direction to form electrical connection in series, in parallel or the combinations. Therefore, the multiaxial electricity supply system is extended in the x-axis, y-axis and z-axis direc tions to effectively use of occupied space. The manufacturing costs and difficulty of con nection are significantly reduced. Also, the internal resistance of the electricity supply sys tem is greatly reduced to increase volumetric energy density.

Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from the detailed description given hereinbelow illustration only, and thus are not limitative of the present invention, and wherein:

FIG. 1 illustrates the cross-sectional view of the electricity supply element of the mul tiaxial electricity supply system of this invention.

FIGS. 2A-2D illustrate the multiaxial electricity supply system of this invention, showing the electricity supply elements connected in the x-axis direction.

FIGS. 3A-3D illustrate the multiaxial electricity supply system of this invention, showing the electricity supply elements connected in the y-axis direction.

FIGS. 4A-4D illustrate the multiaxial electricity supply system of this invention, showing the electricity supply elements connected in the z-axis direction.

FIGS. 5A-5D illustrate the embodiment of the multiaxial electricity supply system of this invention.

FIG. 6 illustrates another embodiment of the multiaxial electricity supply system of this invention.

DETAILED DESCRIPTION OF THE INVENTION

The invention provides a multiaxial electricity supply system composed of a plurality of electricity supply elements, connected in the x-axis, y-axis and z-axis directions. There fore, the electrical connections in series, in parallel or the combinations are achieved to ex tend in the three axis directions. Each electricity supply element is an independent and complete module and the electrolyte system does not share between the adjacent electricity supply elements. Firstly, the electricity supply element is disclosed in the follow ing detailed description and the accompanying drawings.

FIG. 1 illustrates the cross-sectional view of the electricity supply element of the mul tiaxial electricity supply system of this invention. The electricity supply element 10 of this 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 se lected from the polymer material, the ceramic material or the glass fiber. Also, the separator 11 has the holes to permit ion migration. The holes are formed by through holes, ant holes, or porous material. The ceramic material may be a ceramic insulation material, which se lected from particulates of TiO 2, A1 2 0 3 , SiO 2 with nanometer and micrometer scale, or al kylation ceramic particles. The ceramic material may also be an oxide-based solid electro lyte, such as a lithium lanthanum zirconium oxide (LLZO) electrolyte, a lithium aluminum titanium phosphate (LATP) electrolyte, or their derivatives. The ceramic material may be mixed with the above-mentioned ceramic insulation material and the above-mentioned ox ide-based solid electrolyte. The separator 11 may further include a polymer adhesive, such as Polyvinylidene fluoride (PVDF), Polyvinylidene fluoride co-hexafluoropropylene (PVDF-HFP), Polytetrafluoroethene (PTFE), acrylic acid glue, epoxy resin, Polyethylene oxide (PEO), Polyacrylonitrile (PAN), or Polyimide (PI).

The active material layers 12, 13 are disposed on two sides of the separator 11 respec tively, and the electrolyte system impregnated therein. The electrolyte system is a solid electrolyte, a liquid electrolyte, a gel electrolyte, or the combination thereof. Therefore, the processes that the chemical energy is converted into electrical energy, discharging, and the electrical energy is converted into chemical energy, charging, may be carried out. The ion migration and transport are achieved. The electric charges are transmitted via the cur rent collectors 14, 15, which are disposed on outer sides of the active material layers 12, 13, respectively. The material of the current collectors 14, 15 is selected from copper (Cu), Aluminum (Al), or nickel (Ni), tin (Sn), silver (Ag), gold (Au), or an alloy comprised of at least one of the foregoing metals.

The material of the sealing layer 16 may be the epoxy, Polyethylene (PE), Polypropyl ene (PP), Polyurethane (PU), thermoplastic polyimide (TPI), silicone, acrylic resin, ultravi olet light curing adhesive, or the combination thereof. The sealing layer 16 is disposed be tween the edges of the two current collectors 14, 15 to adhere the two current collectors 14, 15 and seal the electrolyte system therebetween to avoid leakage and prevent to circulate between the adjacent electricity supply elements 10. Therefore, the electricity supply ele ment 10 is an independent and complete power supply module, which the current collectors 14, 15 and the sealing layer 16 are directly used as package structure.

The electricity supply elements 10 are simply connected to form the multiaxial elec tricity supply system 60 extended in the x-axis, y-axis and z-axis directions to achieve an arrangement of series or parallel connection or the combination. The connection in each axis is disclosed in the following detailed description.

Please refer to FIG. 2A, the electricity supply elements 10 may be connected in series along the x-axis direction via the patterned metal layer 70, or the patterned metal layer 70 may connect the same polarity of the electricity supply elements 10 to form a parallel con nection (see FIG. 2B). Moreover, two sets of the serially connected electricity supply ele ments 10, illustrated in FIG. 2A, may further connect in parallel along the x-axis direction via the patterned metal layer 70 (see FIG. 2C) to make the connection in series and in par allel at same time. Or two sets of the parallel connected electricity supply elements 10, il lustrated in FIG. 2B, may further connect in series along the x-axis direction via the pat terned metal layer 70 (see FIG. 2D) to make the connection in series and in parallel at same time. On the other hand, the patterned metal layer 70 is served as an internal connection to form electrical connection in these embodiments.

Please refer to FIG. 3A, the electricity supply elements 10 may be connected in series along the y-axis direction via the patterned metal layer 70, or the patterned metal layer 70 may connect the same polarity of the electricity supply elements 10 to form a parallel con nection (see FIG. 3B). Moreover, two sets of the serially connected electricity supply ele ments 10, illustrated in FIG. 3A, may further connect in parallel along the y-axis direction via the patterned metal layer 70 (see FIG. 3C) to make the connection in series and in par allel at same time. Or two sets of the parallel connected electricity supply elements 10, il lustrated in FIG. 3B, may further connect in series along the y-axis direction via the pat terned metal layer 70 (see FIG. 3D) to make the connection in series and in parallel at same time. On the other hand, the patterned metal layer 70 is served as an internal connection to form electrical connection in these embodiments.

Please refer to FIG. 4A, the electricity supply elements 10 may be connected in series along the z-axis direction via direct contacting, or may connect the same polarity of the electricity supply elements 10 with a back-to-front stacking relationship to form a parallel connection (see FIG. 4B). Moreover, several sets of the serially connected electricity sup ply elements 10, illustrated in FIG. 4A, may further connect in parallel along the z-axis di rection with a back-to-front stacking relationship, or via conductive lines, such as the pat terned metal layer 70 (see FIG. 4C) to make the connection in series and in parallel at the same time. Or several sets of the parallel connected electricity supply elements 10, illus trated in FIG. 4B, may further connect in series along the z-axis direction to be stacked (see FIG. 4D) to make the connection in series and in parallel at the same time. In these em bodiments, the patterned metal layer 70 is served as an internal connection to form electri cal connection between the electricity supply elements 10 in the x-axis and y-axis direc tions. The patterned metal layer 70 may also be utilized to electrically connect several elec tricity supply elements 10 stacked in z-axis direction.

The above-mentioned current collectors 14, 15 may further have an electrode tab to form electrical connection, which may be made by contacting or welding after folding, or electrically conductive connection. The electrical connections are well-known in this art. The main features of this invention is the stacking for electricity supply elements 10 in the x-axis, y-axis and z-axis directions. Therefore, the further description is omitted.

Therefore, due to the outermost layers of the electricity supply elements 10 are the current collectors 14, 15, the electricity supply elements 10 are connected to each other via direct contacting of the current collectors 14, 15 to form series or parallel connection in the z-axis direction. For the extension in the x-axis and y-axis directions, the patterned metal layer 70 is utilized to connect the electricity supply elements 10. The patterned metal layer 70 may be a single metal layer, a single-layered PCB (printed circuit board), or a double sided PCB. When the double sided PCB is utilized, the metal layer on the other side, which not used for series or parallel connection of the electricity supply elements 10, may be used for additional layout, such as the monitor or management circuit of the multiaxial electrici ty supply system 60, or the control or monitor circuit of the extension elements. When the single metal layer is utilized, the patterned metal layer 70 includes an auxiliary material to enhance the structural strength for supporting, or to improve the heat dissipation efficiency of the multiaxial electricity supply system 60 by using specific material, such as high ther mal conductivity materials.

In the above-mentioned embodiments, the electricity supply elements 10 connected in series or in parallel connection or the combinations are defined as an electricity supply el ement group. Please refer to FIG. 5A, a plurality of electricity supply element groups, con nected in parallel along the x-axis direction as disclosed in FIG. 2B, are connected and ar ranged repeatedly along the y-axis direction to form the multiaxial electricity supply system 60. For example, there are three electricity supply element groups in FIG. 5A to be con nected. And the patterned metal layer 70 is utilized to form parallel connection in the y-axis direction. Furthermore, a plurality of multiaxial electricity supply systems 60, disclosed in FIG. 5A, may be extended to connect in series along the x-axis direction, as shown in FIG. 5B.

Please refer to FIG. 5C, for forming the multiaxial electricity supply system 60, a plu rality of electricity supply element groups, connected in parallel along the z-axis direction as disclosed in FIG. 4B, are arranged repeatedly along the x-axis and y-axis direction and connected via the patterned metal layer 70 to form parallel connection in the x-axis and y-axis direction, respectively. Or please refer to FIG. 5D, for forming the multiaxial elec tricity supply system 60, a plurality of electricity supply element groups, connected in se ries along the z-axis direction as disclosed in FIG. 4A, are arranged repeatedly along the x-axis and y-axis direction and are connected via the patterned metal layer 70 to form series connection in the x-axis and y-axis direction, respectively. As above-mentioned, the pat teamed metal layer 70 are served as electrical connections, which are utilized to electrically connect the electricity supply elements 10 or the electricity supply element groups. The electrical connections are well-known in this art. The main features of this invention is the arrangement of the electricity supply elements 10 in the multiaxial directions. Therefore, the further description is omitted. Accordingly, the patterned metal layer 70 is served as the internal connection to form electrical connection between the electricity supply elements 10, or between the electricity supply element groups. To output the electrical power, the multi axial electricity supply system 60 includes a positive electrical terminal 81, which is an output positive terminal of the multiaxial electricity supply system, and a negative electrical terminal 82, which is an output negative terminal of the multiaxial electricity supply system 60. The positive electrical terminal 81 has a center point (Xc,Yc,Zc) and the negative elec trical terminal 82 has a center point (Xa,Ya,Za), wherein Xc*Xa, Yc*Ya, Zc*Za or a com bination thereof. That means the positive electrical terminal 81 and the negative electrical terminal 82 may be located on the same or different sides.

As shown in FIG. 5D, the positive electrical terminal 81 and the negative electrical terminal 82 may connect directly to the current collectors 14, 15 of each electricity supply elements 10, or to the patterned metal layer 70. Also, the positive electrical terminal 81 and the negative electrical terminal 82 may extend from the current collectors 14, 15 or the pat terned metal layer 70.

The foregoing description or illustrations in the FIGS. 5A-5D are for illustrative pur poses only, but not limit to the connections of the multiaxial electricity supply system 60. Any extensions in the x-axis, y-axis and z-axis directions to form the multiaxial electricity supply system 60 with series, parallel connection or the combinations would all fit within the scope of the invention.

Then please refer to FIG. 6, an external package 50 is utilized to seal the multiaxial electricity supply system 60. The external package 50 may be a polymer film to avoid short circuit, or may be a well-know aluminum foil or a well-know metal can. Also, the external package 50 is filled with a coolant to improve the heat dissipation efficiency. As shown in FIG. 6, the gaps between the electricity supply element groups in the x-axis and y-axis di rection can be serve as a cooling airflow path. If it is considered that more electricity supply elements 10 in series or parallel will also generate more heat during operation, the cooling pipes or the cooling systems may also be provided in the gaps. The heat generated by the operation is smoothly dissipated, so that the multiaxial electricity supply system 60 would maintain normal operation. Furthermore, the external package 50 is substantially a rectan gular parallelepiped shape in FIG. 6. According to actual practices, for example, when ap plied to electric vehicles, it can be adjusted according to the available installation space of the electric vehicle. Therefore, the overall available installation space can be used as a storage space for batteries by flexible arrangement of the internal electricity supply ele ments 10 to increase the battery capacity of the multiaxial electricity supply system 60.

According to above-mentioned embodiments, it can be understood that when using N1 x N2 x N3 electricity supply elements 10, the multiaxial electricity supply system 60 in cludes N 1 electricity supply elements arranged in a z-axis direction, N 2 z-axis stacked elec tricity supply element groups arranged in the x-axis direction and N 3 z-axis stacked elec tricity supply element groups arranged in the y-axis direction. In the z-axis direction, the adjacent electricity supply elements are directly contacted via their current collectors to form a z-axis stacked electricity supply element group. The N 2 z-axis stacked electricity supply element groups are disposed along the x-axis direction side by side, and the N 3 z-axis stacked electricity supply element groups are disposed along a y-axis direction side by side. The each of N 1, N 2 and N 3 is a natural number of 2 or more.

Under this structure, when a metal needle pierces the multiaxial electricity supply sys tem 60, the metal needle would only pierce a smaller number of vertically stacked electric ity supply elements 10, rather than all the N1 x N 2 x N 3 electricity supply elements 10 verti cally. Therefore, the risk of vertical piercing of a large number of vertical stacked in series electricity supply elements is reduced.

Accordingly, the multiaxial electricity supply system of the present invention is com posed of a plurality of electricity supply elements, which is an independent and complete module. The structure with high capacity and high voltage is simplified and easy to manu facture for mass production. Therefore, the reliability, the volumetric energy density and safety of the electricity supply system are significantly improved.

Furthermore, because the electricity supply element is an independent and complete module, the electrolyte system of each electricity supply element does not circulate there between. Therefore, the charge transfer is occurred between the adjacent electricity sup ply elements without electrochemical reactions, i.e. without ion migration and transport. The electrolyte decomposition would not occur result from the high voltage to improve the safety. Also, the electricity supply element group is formed by the directly contact of the current collectors of the adjacent electricity supply elements. The resistance of the whole structure is very low, and the excellent charging/discharging speed efficiency and low heat generation are achieved. Therefore, the heat dissipation mechanism could be simplified. The whole system is easy to manage and control.

The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.

Claims

CLAIMS What is claimed is:

1. A multiaxial electricity supply system, comprising:

a plurality of electricity supply elements, electrically connected to each other both in series and in parallel to form an arrangement in the three-axis di rections, each of the electricity supply elements including:

two current collectors;

two active material layers, disposed between the two current collec tors;

an electrolyte system, impregnated in the active material layers; and

a sealing layer, disposed between the edges of the two current col lectors to adhere the two current collectors and seal the electrolyte system therebetween without leaking;

wherein each of the electricity supply elements is an independent and complete module and the electrolyte system of each electricity supply element does not circulate therebetween; wherein a charge transfer is occurred between the adjacent electricity supply elements without electrochemical reactions;

wherein in a z-axis direction, the adjacent electricity supply elements are directly contacted via their current collectors to form electrical connection in series or in parallel; and

a patterned metal layer, connected to the electricity supply elements in a x-axis direction and a y-axis direction to form electrical connection in series or in parallel.

2. The multiaxial electricity supply system of claim 1, wherein the electrolyte system is a gel electrolyte, a liquid electrolyte, a solid electrolyte or a combination thereof.

3. The multiaxial electricity supply system of claim 1, wherein the electricity supply element further comprising a separator disposed between the two active material layer.

4. The multiaxial electricity supply system of claim 1, wherein the patterned met al layer is a metal layer of a printed circuit board (PCB).

5. The multiaxial electricity supply system of claim 1, wherein the patterned met al layer includes an auxiliary material.

6. The multiaxial electricity supply system of claim 1, further comprising an ex ternal package to seal the electricity supply elements.

7. The multiaxial electricity supply system of claim 6, wherein the external package is filled with a coolant.

8. A multiaxial electricity supply system, comprising:

N 1 electricity supply elements, each of the electricity supply elements in cluding two current collectors and an electrochemical system disposed between the two current collectors, wherein in a z-axis direction, the adjacent electricity supply elements are directly contacted via their current collectors to form a z-axis stacked electricity supply element group, wherein N 1 is a natural number of 2 or more;

N 2 z-axis stacked electricity supply element groups, disposed along a x-axis direction side by side, wherein N 2 is a natural number of 2 or more;

N 3 z-axis stacked electricity supply element groups, disposed along a

y-axis direction side by side, wherein N 3 is a natural number of 2 or more;

a positive electrical terminal, being an output positive terminal of the elec tricity supply system; and

a negative electrical terminal, being an output negative terminal of the electricity supply system.

9. The multiaxial electricity supply system of claim 8, wherein the adjacent elec tricity supply elements are directly contacted via their current collectors to form electrical connection in series or in parallel.

10. The multiaxial electricity supply system of claim 8, wherein each of the elec tricity supply elements further comprising a sealing layer, essentially disposed between the two current collectors to adhere the two current collectors and seal the electrochemical sys tem therebetween without leaking

11. The multiaxial electricity supply system of claim 8, wherein the positive elec trical terminal has a center point (Xc,Yc,Zc) and the negative electrical terminal has a cen

ter point (Xa,Ya,Za), wherein Xc*Xa, Yc*Ya, Zc*Za or a combination thereof.

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FIG. 1

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