CN211828990U - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
CN211828990U
CN211828990U CN202020702627.2U CN202020702627U CN211828990U CN 211828990 U CN211828990 U CN 211828990U CN 202020702627 U CN202020702627 U CN 202020702627U CN 211828990 U CN211828990 U CN 211828990U
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Prior art keywords
circuit board
battery pack
groove
battery
bearing
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CN202020702627.2U
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Chinese (zh)
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尹旭勇
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Huizhou Fuji Energy Technology Co ltd
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Guangdong Yidian Energy Technology Co ltd
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Priority to CN202020702627.2U priority Critical patent/CN211828990U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The utility model provides a battery pack, this battery pack include conflux circuit board, first battery pack, intermediate circuit board, second battery pack and bottom circuit board. The first battery assembly comprises a plurality of first single batteries and a plurality of fixing pieces. The first single battery is provided with a first bearing part and a first plug connector. The second battery pack comprises a plurality of second single batteries and a plurality of locking pieces. The second single battery is provided with a second bearing part and a second plug connector. Each first receiving member abuts against the bus circuit board. Each fixing piece is screwed with a first bearing piece. Each second receiving member abuts against the intermediate circuit board. Each first plug connector is in threaded connection with a second bearing and mounting piece. Each second plug connector is in threaded connection with a locking piece. Above-mentioned battery package passes through the mode of screw-thread fastening, has realized the assembly of circuit board, first battery pack, middle circuit board, second battery pack and bottom circuit board that converges to the equipment convenience and the connection stability of this battery package have been promoted.

Description

Battery pack
Technical Field
The utility model relates to a technical field of battery package especially relates to a battery package.
Background
The battery PACK is also called a battery PACK, and refers to an assembled battery formed by assembling a plurality of battery PACKs and a plurality of bus circuit boards. The battery pack increases the output voltage by increasing the number of cells connected in series, and increases the battery capacity by increasing the number of cells connected in parallel. Battery packs have been widely used in power supply devices for electric bicycles, resistance bicycles, and electric automobiles. At present, a commonly-used battery pack is composed of three bus circuit boards and two groups of battery packs, each battery pack is located between two adjacent bus circuit boards, each battery pack comprises a plurality of single batteries, and each single battery is electrically connected with the bus circuit boards in a spot welding mode.
However, the spot welding is troublesome in operation, it takes time to manufacture the battery pack by spot welding, the convenience of assembly is insufficient, and the assembly efficiency is low. In addition, through the mode of spot welding connection for the stability of being connected of each battery cell and cylinder manifold is not enough, leads to the structural strength of battery package low, influences the stability in use, the reliability of battery package, and easily causes the incident.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a battery pack for solving the technical problems of insufficient assembly convenience and poor connection stability.
A battery pack includes a bus circuit board, a first battery module, a middle circuit board, a second battery module, and a bottom circuit board. The bus circuit board, the first battery pack, the intermediate circuit board, the second battery pack and the bottom circuit board are connected in sequence. The first battery pack comprises a plurality of first single batteries and a plurality of fixing pieces. The positive pole end of the first single battery is provided with a first bearing part, and the negative pole end of the first single battery is provided with a first plug connector. The second battery pack comprises a plurality of second single batteries and a plurality of locking pieces. And a second bearing part is arranged at the positive end of the second single battery, and a second plug connector is arranged at the negative end of the second single battery. The confluence circuit board is provided with a plurality of first connecting holes. The first bearing piece is provided with first bearing grooves, each first bearing groove is communicated with one first connecting hole, and each first bearing piece is abutted to the bus circuit board. Each fixing piece is sequentially inserted into one first connecting hole and one first bearing groove, and each fixing piece is abutted against the bus circuit board and is in threaded connection with one first bearing piece. The middle circuit board is provided with a plurality of second connecting holes. The second bearing piece is provided with second bearing grooves, each second bearing groove is communicated with one second connecting hole, and each second bearing piece is abutted to the intermediate circuit board. Each first plug connector is inserted one in proper order in the second connecting hole and one in the second holds the dress groove, each first plug connector with intermediate circuit board butt and with one the second holds dress spare spiro union. The bottom circuit board is provided with a plurality of third connecting holes. The locking piece is provided with screw holes, each screw hole is communicated with one third connecting hole, and each locking piece is abutted to the bottom circuit board. Each second plug connector inserts one in proper order in third connecting hole and one in the spiro union hole, each the second plug connector with bottom circuit board butt and with one the lock piece spiro union.
In one embodiment, each of the first unit cells is distributed in a matrix form.
In one embodiment, the bus circuit board has a first position-limiting groove formed at the first connection hole, the first position-limiting groove is communicated with the first connection hole, and each of the first mounting members is inserted into one of the first position-limiting grooves and abuts against the bus circuit board.
In one embodiment, the bus circuit board is provided with a first snap ring on a groove wall of the first limiting groove, a first ring groove is formed in an outer side wall of the first bearing part, and the first snap ring is inserted into the first ring groove and clamped with the first bearing part.
In one embodiment, the first limiting groove is a prismatic groove.
In one embodiment, the first limiting groove is a cylindrical groove.
In one embodiment, the intermediate circuit board is provided with a second limiting groove at the second connecting hole, the second limiting groove is communicated with the second connecting hole, and each second bearing piece is inserted into one second limiting groove and abuts against the intermediate circuit board.
In one embodiment, a second snap ring is disposed on a groove wall of the second limiting groove of the intermediate circuit board, a second ring groove is formed in an outer side wall of the second bearing part, and the second snap ring is inserted into the second ring groove and clamped with the second bearing part.
In one embodiment, the second limiting groove is a prismatic groove.
In one embodiment, the second limiting groove is a cylindrical groove.
Above-mentioned battery package, the spiro union relation of converging the circuit board and first bearing part through the mounting, has realized converging the electric connection of circuit board and first battery cell. Through the spiro union relation of first plug connector and second bearing part, middle circuit board is respectively with first battery cell and second battery cell electric connection. Through the spiro union relation of second plug connector and locking piece, realized bottom circuit board and second battery cell's electric connection. First battery pack and second battery pack pass through the mode of screw-thread fastening and are connected the assembly with circuit board, middle circuit board and bottom circuit board converge respectively to the equipment convenience and the connection stability of this battery package have been promoted, have promoted production packaging efficiency, have strengthened structural strength.
Drawings
FIG. 1 is a schematic diagram of a battery pack according to an embodiment;
FIG. 2 is a schematic diagram of the battery pack of the embodiment of FIG. 1 from another perspective;
fig. 3 is a schematic structural diagram of a first unit cell of a battery pack in one embodiment;
fig. 4 is a schematic structural diagram of the first unit cell of the battery pack in the embodiment of fig. 3 from another view angle;
fig. 5 is a schematic structural view of a second unit cell of the battery pack in one embodiment;
fig. 6 is a schematic structural diagram of another view angle of the second unit cell of the battery pack in the embodiment shown in fig. 5;
FIG. 7 is another schematic diagram of a battery pack according to an embodiment;
FIG. 8 is a schematic sectional view showing a part of the structure of a battery pack in one embodiment;
FIG. 9 is a schematic sectional view showing another part of the structure of a battery pack in one embodiment;
fig. 10 is a schematic sectional view of another partial structure of a battery pack in one embodiment.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 to 10, the present invention provides a battery pack 10, wherein the battery pack 10 includes a bus circuit board 100, a first battery assembly 200, an intermediate circuit board 300, a second battery assembly 400, and a bottom circuit board 500. The bus circuit board 100, the first battery pack 200, the intermediate circuit board 300, the second battery pack 400, and the bottom circuit board 500 are sequentially connected. The first battery assembly 200 includes a plurality of first unit batteries 210 and a plurality of fixing members 220. The positive terminal of the first unit cell 210 is provided with a first receiving member 211, and the negative terminal of the first unit cell 210 is provided with a first connector 212. The second battery pack 400 includes a plurality of second unit batteries 410 and a plurality of latches 420. The positive terminal of the second battery cell 410 is provided with a second receiving member 411, and the negative terminal of the second battery cell 410 is provided with a second connector 412. The bus circuit board 100 is formed with a plurality of first connection holes 110. The first receiving member 211 has first receiving grooves 213, each first receiving groove 213 is connected to a first connecting hole 110, and each first receiving member 211 abuts against the bus circuit board 100. Each fixing member 220 is inserted into a first connecting hole 110 and a first receiving groove 213 in sequence, and each fixing member 220 abuts against the bus circuit board 100 and is screwed with a first receiving member 211. The middle circuit board 300 is formed with a plurality of second connection holes 310. The second receiving member 411 has second receiving grooves 413, each second receiving groove 413 is communicated with a second connecting hole 310, and each second receiving member 411 abuts against the intermediate circuit board 300. Each first connector 212 is inserted into a second connecting hole 310 and a second receiving groove 413 in sequence, and each first connector 212 abuts against the middle circuit board 300 and is screwed with a second receiving member 411. The bottom circuit board 500 is formed with a plurality of third connection holes 510. The locking member 420 has screw holes 421, each screw hole 421 is connected to a third connecting hole 510, and each locking member 420 abuts against the bottom circuit board 500. Each of the second connectors 412 is sequentially inserted into a third connecting hole 510 and a screw hole 421, and each of the second connectors 412 is abutted against the bottom circuit board 500 and is screwed with a locking member 420.
In the battery pack 10, the bus circuit board 100 is electrically connected to the first single battery 210 through the screw connection between the fixing member 220 and the first receiving member 211. Through the screw connection relationship between the first connector 212 and the second receiving member 411, the middle circuit board 300 is electrically connected to the first unit cell 210 and the second unit cell 410, respectively. The electrical connection between the bottom circuit board 500 and the second battery cell 410 is realized through the screw connection between the second plug connector 412 and the locking member 420. The first battery pack 200 and the second battery pack 400 are respectively connected and assembled with the bus circuit board 100, the middle circuit board 300 and the bottom circuit board 500 in a threaded fastening manner, so that the assembly convenience and the connection stability of the battery pack 10 are improved, the production assembly efficiency is improved, and the structural strength is enhanced.
The bus circuit board 100 serves as a main circuit board and plays a role in bus, and various electronic chips are arranged on the bus circuit board 100 to play a role in monitoring and managing the first single batteries 210 and the second single batteries 410. The battery pack is connected to an external electric device through the bus circuit board 100. In addition, the bus circuit board 100 also supports and fixes the first unit batteries 210. The middle circuit board 300 and the bottom circuit board 500 serve as auxiliary circuit boards, the middle circuit board 300 performs a bus and fixing function on each first battery cell 210, and the bottom circuit board 500 performs a bus and fixing function on each second battery cell 410. The bus circuit board 100, the middle circuit board 300, and the bottom circuit board 500 serve as a support structure of the battery pack, and play a role in stably supporting the first battery assembly 200 and the second battery assembly 400, so as to ensure structural stability of the battery pack.
The first single battery 210 and the second single battery 410 are connected in series and in parallel, so that the output voltage of the battery pack is increased, and the battery capacity is increased. It should be noted that the bus circuit board 100, the first single batteries 210, the middle circuit board 300, the second single batteries 410, and the bottom circuit board 500 are all mature products in the market, and the functions and principles thereof can be referred to in the prior art, which is not described herein again. The utility model provides a battery pack lies in the connected mode between protection conflux circuit board 100, each first battery cell 210, intermediate circuit board 300, each second battery cell 410 and bottom circuit board 500.
The first receiving member 211 is used to abut against the bus circuit board 100, so as to realize an electrical connection relationship between the first unit cell 210 and the bus circuit board 100. The fixing member 220 is used for fastening the connection between the first receiving member 211 and the bus circuit board 100, so as to ensure the stability of the electrical connection between the first unit cell 210 and the bus circuit board 100. The fixing member 220 is sequentially inserted into the first connecting hole 110 and the first receiving groove 213, and the fixing member 220 and the first receiving member 211 are screwed, so that the connection firmness of the first unit battery 210 and the bus circuit board 100 is ensured, and the convenience of assembly and disassembly is improved. The battery pack is convenient for a user to carry out assembling operation and maintenance and replacement operation, thereby improving the maintainability of the battery pack.
Further, the first plug connector 212 is used for connecting the second bearing unit 411 and the intermediate circuit board 300, so as to ensure the electrical connection relationship between the first battery cell 210 and the intermediate circuit board 300 and the second battery cell 410. The second receiving member 411 is adapted to receive the first connector 212. The first plug connector 212 is sequentially inserted into the second connecting hole 310 and the second receiving groove 413, and the connection stability of the first unit battery 210 and the second unit battery 410 is guaranteed through the screw connection relationship between the first plug connector 212 and the second receiving piece 411. Meanwhile, the intermediate circuit board 300 is clamped by the first connector 212 and the second bearing 411, so that the installation stability of the intermediate circuit board 300 is guaranteed, and the structural stability of the battery pack is guaranteed.
In order to improve the compactness of the battery pack, in one embodiment, the first unit batteries 210 are distributed in a matrix. That is, the second unit cells 410 are also arranged in a matrix. The battery pack is integrally of a cuboid structure, so that the structural stability is guaranteed, and the degree of structural compactness is improved.
The locking member 420 is adapted to engage the second plug 412 for locking. The second connector 412 is sequentially inserted into the third connection hole 510 and the screw hole 421, and the clamping effect on the bottom circuit board 500 is ensured through the screw connection relationship between the second connector 412 and the locking member 420, so that the stability of the electrical connection between the second battery cell 410 and the bottom circuit board 500 is ensured. In addition, detachability is realized, good connection firmness degree is guaranteed, and maintainability is improved.
In order to improve the assembly convenience, in one embodiment, the bus circuit board 100 is provided with a first limiting groove 111 at the first connection hole 110, the first limiting groove 111 is communicated with the first connection hole 110, and each first bearing member 211 is inserted into one first limiting groove 111 and abuts against the bus circuit board 100. Specifically, in an embodiment, the first position-limiting groove 111 is a prism-shaped groove. In another embodiment, the first limiting groove 111 is a cylindrical groove. The first limiting groove 111 limits the first bearing part 211. In the assembling process, after the first bearing part 211 is partially inserted into the first limiting groove 111, the first connecting hole 110 is aligned with the first bearing groove 213, so that the user can conveniently insert the fixing part 220 into the first connecting hole 110 and the first bearing groove 213, the assembling convenience is improved, and the assembling efficiency is improved. Therefore, the assembly convenience of the battery pack is improved. Further, in one embodiment, the bus circuit board 100 is provided with a first snap ring 112 on a groove wall of the first limiting groove 111, a first groove 214 is formed on an outer side wall of the first bearing member 211, and the first snap ring 112 is inserted into the first groove 214 and is clamped with the first bearing member 211. Like this, after first bearing part 211 partially inserts first spacing groove 111, first snap ring 112 will play the card to establish the effect to first bearing part 211, and first bearing part 211 can not drop from first spacing groove 111 to the user has made things convenient for assembly work. Therefore, the assembly convenience of the battery pack is further improved.
In order to improve the assembling convenience, in one embodiment, the intermediate circuit board 300 is provided with a second limiting groove 311 at the second connection hole 310, the second limiting groove 311 is communicated with the second connection hole 310, and each second bearing member 411 is inserted into one second limiting groove 311 and abuts against the intermediate circuit board 300. Specifically, in an embodiment, the second limiting groove 311 is a prism-shaped groove. In another embodiment, the second limiting groove 311 is a cylindrical groove. The second limiting groove 311 limits the second bearing assembly 411. In the assembling process, the second connecting hole 310 is aligned with the second bearing groove 413 after the second bearing part 411 is partially inserted into the second limiting groove 311, so that the first plug connector 212 can be conveniently inserted into the second connecting hole 310 and the second bearing groove 413 by a user, the assembling convenience is improved, and the assembling efficiency is improved. Therefore, the assembly convenience of the battery pack is improved. Further, in one embodiment, the intermediate circuit board 300 is provided with a second snap ring 312 on a groove wall of the second limiting groove 311, the outer side wall of the second bearing assembly 411 is provided with a second groove 414, and the second snap ring 312 is inserted into the second groove 414 and is clamped with the second bearing assembly 411. Like this, after second bearing part 411 part inserts second spacing groove 311, second snap ring 312 will play the card to establish the effect to second bearing part 411, and second bearing part 411 can not drop from second spacing groove 311 to the user has made things convenient for assembly work. Thus, the assembly convenience of the battery pack is further improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A battery pack, comprising: the battery pack comprises a bus circuit board, a first battery assembly, an intermediate circuit board, a second battery assembly and a bottom circuit board; the bus circuit board, the first battery assembly, the middle circuit board, the second battery assembly and the bottom circuit board are connected in sequence;
the first battery assembly comprises a plurality of first single batteries and a plurality of fixing pieces; a first bearing part is arranged at the positive end of the first single battery, and a first plug connector is arranged at the negative end of the first single battery;
the second battery assembly comprises a plurality of second single batteries and a plurality of locking pieces; a second bearing part is arranged at the positive end of the second single battery, and a second plug connector is arranged at the negative end of the second single battery;
the bus circuit board is provided with a plurality of first connecting holes; the first bearing piece is provided with first bearing grooves, each first bearing groove is communicated with one first connecting hole, and each first bearing piece is abutted against the bus circuit board; each fixing piece is sequentially inserted into one first connecting hole and one first bearing groove, and each fixing piece is abutted against the bus circuit board and is in threaded connection with one first bearing piece;
the middle circuit board is provided with a plurality of second connecting holes; the second bearing piece is provided with second bearing grooves, each second bearing groove is communicated with one second connecting hole, and each second bearing piece is abutted against the intermediate circuit board; each first plug connector is sequentially inserted into one second connecting hole and one second bearing groove, and each first plug connector is abutted against the middle circuit board and is in threaded connection with one second bearing part;
the bottom circuit board is provided with a plurality of third connecting holes; the locking piece is provided with screw holes, each screw hole is communicated with one third connecting hole, and each locking piece is abutted to the bottom circuit board; each second plug connector inserts one in proper order in third connecting hole and one in the spiro union hole, each the second plug connector with bottom circuit board butt and with one the lock piece spiro union.
2. The battery pack of claim 1, wherein the first cells are arranged in a matrix.
3. The battery pack of claim 1, wherein the bus circuit board has a first position-limiting groove formed at the first connection hole, the first position-limiting groove is communicated with the first connection hole, and each of the first receiving members is inserted into one of the first position-limiting grooves and abuts against the bus circuit board.
4. The battery pack according to claim 3, wherein the bus circuit board is provided with a first snap ring on a groove wall of the first limiting groove, the outer side wall of the first bearing component is provided with a first groove, and the first snap ring is inserted into the first groove and clamped with the first bearing component.
5. The battery pack of claim 4, wherein the first restraint groove is a prismatic groove.
6. The battery pack of claim 4, wherein the first restraint slot is a cylindrical slot.
7. The battery pack of claim 1, wherein the intermediate circuit board has a second limiting groove formed at the second connecting hole, the second limiting groove is communicated with the second connecting hole, and each of the second receiving members is inserted into one of the second limiting grooves and abuts against the intermediate circuit board.
8. The battery pack according to claim 7, wherein a second snap ring is disposed on a groove wall of the second limiting groove of the intermediate circuit board, a second groove is disposed on an outer side wall of the second receiving member, and the second snap ring is inserted into the second groove and is clamped with the second receiving member.
9. The battery pack of claim 8, wherein the second restraint groove is a prismatic groove.
10. The battery pack of claim 8, wherein the second restraint slot is a cylindrical slot.
CN202020702627.2U 2020-04-30 2020-04-30 Battery pack Active CN211828990U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020702627.2U CN211828990U (en) 2020-04-30 2020-04-30 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020702627.2U CN211828990U (en) 2020-04-30 2020-04-30 Battery pack

Publications (1)

Publication Number Publication Date
CN211828990U true CN211828990U (en) 2020-10-30

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Application Number Title Priority Date Filing Date
CN202020702627.2U Active CN211828990U (en) 2020-04-30 2020-04-30 Battery pack

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Country Link
CN (1) CN211828990U (en)

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Effective date of registration: 20231211

Address after: 516000 plant No. 11-12, Huizhou Zhongkai Zhongji Zhigu Industrial Park, shanpo village, Lilin Town, Huizhou Zhongkai high tech Zone, Huizhou City, Guangdong Province

Patentee after: Huizhou Fuji Energy Technology Co.,Ltd.

Address before: Room 008, 3rd Floor, Building C-1, No. 6 Gongye North Road, Songshan Lake High tech Industrial Development Zone, Dongguan City, Guangdong Province, 523808

Patentee before: GUANGDONG YIDIAN ENERGY TECHNOLOGY Co.,Ltd.