TWM596460U - Connecting module with battery core protection function - Google Patents

Abstract

The present invention provides a connection module with the function of protecting a battery core, which includes a plurality of conductive sheets and a plurality of conductive wires or a mesh-shaped conductive wire. The conductive sheets are respectively connected to at least one battery core, and the conductive wires or the mesh-shaped conductive wires are connected to a plurality of conductive sheets, wherein the conductivity of the conductive wires or the mesh-shaped conductive wires is higher than that of the conductive sheets. When the battery cell connected to the conductive sheet is faulty, causing the electrolyte to spray out the faulty battery cell, or the current on the conductive wire or the mesh conductive wire is too large, it will cause the conductive wire or the mesh conductive wire to melt to protect other The purpose of the battery cell.

Description

Connection module with function of protecting battery core

The present invention provides a connection module with the function of protecting battery cores for protecting connected battery cores.

Rechargeable batteries are widely used in many products, such as notebook computers, tablet computers, mobile communication devices, electric bicycles, electric vehicles or electric vehicles. Generally, a plurality of cells are connected to form a battery pack, and the series and/or parallel connection of each battery cell is adjusted so that the battery pack can output the voltage required by the product.

The structure of the battery core mainly includes the positive electrode material, the electrolyte, the negative electrode material, the separation layer and the case, wherein the separation film separates the positive electrode material and the negative electrode material to avoid short circuit, and the electrolyte is provided in the porous separation film, and Works as the conduction of ionic charges. The casing is used to cover the foregoing positive electrode material, separator, electrolyte and negative electrode material. Generally speaking, the casing is usually made of metal material.

If one of the battery cells in the battery pack fails to cause a short circuit, it will cause other normal battery cells to charge the short-circuited battery cells with high current, which will cause the temperature of the short-circuited battery cells to rise abnormally. When the temperature exceeds the temperature that the isolation layer inside the battery core can withstand, it will cause the isolation layer to dissolve, causing the positive and negative electrode materials of the battery core to short-circuit, thereby causing the battery core to melt or explode.

In addition, the electrolyte may be squirted or oozed out of the faulty or sintered battery cell, and transferred to other battery cells or conductive sheets in the state of gas or liquid, which may cause the temperature of the conductive sheet and the connected battery cells to rise abnormally. , And may cause damage to other normal battery cells.

An object of the present invention is to provide a connection module with a function of protecting a battery core, including a plurality of conductive sheets and a plurality of conductive wires or a mesh-shaped conductive wire, wherein the conductive sheet is used to connect at least one battery core, and the conductive wire or The mesh-shaped conductive wire is connected to a plurality of conductive pieces. When the battery fluid is ejected from the faulty battery core, the conductive wire or mesh-shaped conductive wire will be melted to avoid normal battery core melting or explosion. In addition, when the faulty battery cell is short-circuited, causing other normal battery cells to charge the faulty battery cell with high current, the conductive wire or the mesh conductive wire will also be melted to avoid the temperature rise of the faulty battery cell. The case of a malfunctioning battery cell explosion.

Another object of the present invention is to provide a connection module with a function of protecting a battery core, including a plate body, at least two connection portions and a perforated portion, wherein the connection portion is used to connect at least one battery core, and the perforated portion is located Between the two connections. Through the setting of the perforated portion, the malfunctioning battery core can be prevented from melting or exploding, and the malfunctioning battery core can be prevented from affecting other normal battery cores and causing other normal battery cores to melt or explode.

The present invention proposes a connection module with the function of protecting a battery core, which includes: a plurality of conductive sheets, respectively used to connect a battery core; and a plurality of conductive wires or a mesh-shaped conductive wire, which connects a plurality of conductive sheets to make the conductive sheets The connected battery cores are electrically connected via a conductive wire or a mesh-shaped conductive wire, wherein the conductivity of the conductive wire or the mesh-shaped conductive wire is higher than that of the conductive sheet.

The present invention proposes another connection module with the function of protecting the battery core, including: a plurality of conductive connection pieces, respectively two battery cells connected in series; and a plurality of conductive wires or a mesh-shaped conductive wire, connecting two conductive connection pieces, so that The battery cores connected to the conductive connecting pieces are connected in parallel through conductive wires or mesh-shaped conductive wires, wherein the conductivity of the conductive wires or mesh-shaped conductive wires is higher than that of the conductive connecting pieces.

The present invention proposes another connection module with the function of protecting a battery core, including: a plate body; at least two connection portions, located at both ends of the plate body, and respectively used to connect at least one battery core; and a perforated portion, connection The two connecting portions enable the battery cells connected by the two connecting portions to be electrically connected via the perforated portion, wherein the perforated portion includes a plurality of strip-shaped perforations.

The present invention proposes another connection module with the function of protecting battery cores, including: a plurality of conductive connection pieces, respectively connecting two battery cores in series; and a perforated portion, connecting two conductive connection pieces so that the battery cores connected by the conductive connection pieces Parallel through the perforated part, wherein the perforated part includes a plurality of strip-shaped perforations.

The connection module with the function of protecting the battery core includes a common gold part located between the conductive sheet and the conductive wire or mesh-shaped conductive wire, and is connected to the conductive sheet and the conductive wire or mesh-shaped conductive wire.

In the connection module with the function of protecting a battery core, a plurality of battery cells connected in series and parallel by a plurality of conductive sheets are connected in a mesh-shaped conductive line.

In the connection module with the function of protecting the battery core, the mesh-shaped conductive wire includes a plurality of horizontal conductive wires and a plurality of vertical conductive wires. The horizontal conductive wires connect the plurality of conductive sheets, and the vertical conductive wires connect the horizontal conductive wires.

In the connection module with the function of protecting the battery core, the perforated portion further includes a plurality of strip-shaped conductive portions, which are adjacent to the strip-shaped perforated.

Please refer to FIG. 1, which is a three-dimensional schematic diagram of an embodiment of a novel connection module with a battery cell protection function. As shown in the figure, the connection module 10 according to the embodiment of the present invention is used to connect a plurality of battery cells 12 and includes a plate body 11, at least two connection portions 13 and a perforated portion 15, of which two connection portions 13 They are located at both ends of the plate body 11 respectively, and the perforated portion 15 is located between the two connecting portions 13 and connects the two connecting portions 13.

The connection module 10 is used to connect two battery cells 12 in series or in parallel. The two connection parts 13 at both ends of the board body 11 are respectively connected to a battery cell 12, so that the two battery cells 12 connected by the connection part 13 are electrically connected through the perforated part 15. Sexually connected.

The perforated portion 15 includes a plurality of strip-shaped perforations 151 and a plurality of strip-shaped conductive portions 153, wherein the strip-shaped perforations 151 are adjacent to the strip-shaped conductive portions 153, for example, the plate body 11 is a metal sheet and can be punched, etched or cast A plurality of strip-shaped perforations 151 and strip-shaped conductive portions 153 are formed on the plate body 11. Specifically, the etching method can form a larger number of strip-shaped perforations 151 on the plate body 11, and the number of the perforations 151 formed on the plate body 11 by stamping or casting is less.

Through the arrangement of the strip-shaped perforations 151, the cross-sectional area of the perforated portion 15 can be reduced. For example, the cross-sectional area of the perforated portion 15 will be smaller than the cross-sectional area of the connecting portion 13. In the embodiment of the present invention, the through-hole portion 15 and the connecting portion 13 are made of the same material, so the resistance value of the through-hole portion 15 with a smaller cross-sectional area will be greater than that of the connecting portion 13. When the current of one battery cell 12 is transmitted to the other battery cell 12 through the connection module 10, the temperature of the through-hole portion 15 with a larger resistance value will be higher than that of the connection portion 13.

Specifically, when one of the battery cells 12 fails, the other normal battery cells 12 may charge the failed battery cells 12 through the connection module 10, so that the current passing through the connection module 10 increases, and the temperature of the perforated portion 15 is caused. rise. When the current of the perforated portion 15 is greater than the preset current, the perforated portion 15 will be fused due to the temperature rise, and a disconnection will be formed between the failed battery cell 12 and the connected battery cell 12, so the normal battery cell 12 will not fail The battery cell 12 is charged.

By connecting a plurality of battery cells 12 through the connection module 10 described in the present invention, the normal battery cells 12 can be prevented from continuously charging the short-circuited battery cells 12 with high current, thus effectively reducing the occurrence of the battery cells 12 melting or exploding. And can improve the safety of use.

In addition, the high-temperature electrolyte in the faulty battery cell 12 may be ejected in a liquid or gaseous state, and the ejected liquid or gaseous electrolyte will diffuse around and contact other battery cells 12 and the connection module 10, and cause other batteries The temperature of the core 12 and the connection module 10 rises abnormally.

Since the structure of the perforated portion 15 of the connection module 10 according to the present invention is relatively fragile, the temperature of the perforated portion 15 will rise and melt after contact with the electrolyte sprayed from the failed battery core 12 An open circuit is formed with the connected battery cells 12 to avoid abnormal charging of the battery cells 12 and to prevent other normal battery cells 12 from being affected by the defective battery cell 12.

Specifically, when the cross-sectional area of the through-hole portion 15 of the connection module 10 is large, the resistance value of the connection module 10 can be reduced, and the energy loss can be reduced. When the cross-sectional area of the perforated portion 15 is small, the perforated portion 15 will have a large resistance value, so that the perforated portion 15 will melt when the current passing through is small.

In addition, a plurality of strip-shaped through holes 151 and strip-shaped conductive portions 153 are provided on the board body 11 by etching, which can increase the number of strip-shaped through holes 151 on the connection module 10 and reduce the cross-sectional area of each strip-shaped conductive portion 153. Specifically, when the cross-sectional area of each strip-shaped conductive portion 153 is small, after each strip-shaped conductive portion 153 contacts the electrolyte discharged from the defective battery cell 12, it will be easier to melt and form a disconnection, making the connection module 10 has better protection effect.

In a specific embodiment of the present invention, the material of the connection module 10 may be copper, wherein the length L of the connection module 10 is 20-30 mm, the width W is 10-15 mm, and the thickness H is 0.3 Mm. The material, length L, width W and thickness H of the connection module 10 are only an embodiment of the present invention, and are not limited by the scope of the rights of the present invention. In actual application, the material of the connection module 10 can be selected according to the needs, and the length L, width W and thickness H of the connection module 10 can be adjusted, and without greatly affecting the conductive effect and energy consumption of the connection module 10, The connection module 10 has the function of protecting the battery core 12.

Please refer to FIG. 2, which is a perspective schematic view of another embodiment of the new connection module with the function of protecting battery cells. As shown in the figure, the connection module 20 according to the embodiment of the present invention is used to connect a plurality of battery cells 12 and includes at least two conductive sheets 23 and a plurality of conductive wires 25. The two conductive sheets 23 are respectively connected to a battery core 12, and the plurality of conductive wires 25 are connected to the two conductive sheets 23, so that the battery cores 12 connected to the conductive sheets 23 are electrically connected via the conductive wires 25, wherein adjacent conductive wires There is a gap 251 between 25.

Specifically, the conductive sheet 23 may be a metal conductive sheet, and the conductive wire 25 is a metal conductive wire. The conductive wire 25 and the conductive sheet 23 can be connected by electric welding, and a common gold portion 26 is formed between the conductive wire 25 and the conductive sheet 23, wherein the common gold portion 26 is located between the conductive sheet 23 and the conductive wire 25, and is connected to the conductive片23和电动线25。 23 and conductive wire 25.

When the current through the conductive wire 25 is greater than the preset current, the conductive wire 25 will be fused due to the temperature rise, and a disconnection will be formed between the failed battery cell 12 and the connected battery cell 12 to achieve the purpose of protecting the battery cell 12.

In addition, when the conductive wire 25 contacts the high-temperature electrolyte discharged from the defective battery cell 12, the temperature of the conductive wire 25 will rise and melt, and a disconnection will be formed between the defective battery cell 12 and the connected battery cell 12 to avoid The battery cell 12 is abnormally charged.

In an embodiment of the present invention, the conductive wire 25 and the conductive sheet 23 can be made of different materials, wherein the material of the conductive wire 25 can be higher in conductivity than the conductive sheet 23, for example, the conductive wire 25 can be a copper wire, and The conductive sheet 23 is a nickel sheet.

In another embodiment of the present invention, as shown in FIG. 3, a plurality of conductive sheets 23 can be connected through a mesh-shaped conductive wire 35. The arrangement and effect of the mesh-shaped conductive wires 35 are similar to those of the plurality of conductive wires 25, and will be melted when contacting high-temperature electrolyte or exceeding a preset current, so as to protect the battery core 12 connected to the connection module 30.

Specifically, the mesh-shaped conductive wires 35 include a plurality of horizontal conductive wires 351 and a plurality of vertical conductive wires 353, wherein the plurality of horizontal conductive wires 351 connect the two conductive sheets 23, and the plurality of vertical conductive wires 353 connect each of the horizontal conductive wires Line 351, and can balance the potential between each horizontal conductive line 351.

As shown in FIG. 3, the horizontal conductive line 351 and the vertical conductive line 353 may be orthogonal, but in practical applications, the horizontal conductive line 351 and the vertical conductive line 353 are not necessarily orthogonal. Therefore, it is only an embodiment of the present invention that the horizontal conductive lines 351 and the vertical conductive lines 353 are orthogonal, rather than being limited by the scope of the rights of the new type.

Please refer to FIG. 4, which is a perspective schematic view of another embodiment of the novel connection module with the function of protecting battery cells. As shown in the figure, the connection module 40 according to the embodiment of the present invention is used to connect a plurality of battery cells 12 and includes at least two conductive connection pieces 43 and a perforated portion 15. The conductive connection piece 43 is used to connect two battery cells 12 in series, and the perforated portion 15 connects the two conductive connection pieces 43 so that the battery cores 12 connected to the conductive connection piece 43 are connected in parallel through the perforated portion 15.

When one of the battery cells 12 fails, the high-temperature electrolyte discharged from the defective battery cell 12 will contact the perforated portion 15, causing the temperature of the perforated portion 15 to rise and melt, and between the failed battery cell 12 and the connected battery cell 12 An open circuit is formed to avoid abnormal charging of the battery cell 12.

In addition, when the normal battery cell 12 does not charge the failed battery cell 12 normally, the large current passing through the perforated portion 15 will also cause the perforated portion 15 to melt, so that the normal battery cell 12 will not be connected to the parallel failed battery cell 12 Charge to avoid explosion of the defective battery cell 12.

In another embodiment of the present invention, a plurality of conductive wires 25 may be used to connect the two conductive connecting pieces 43, so that the battery cells 12 connecting the two conductive connecting pieces 43 are connected in parallel via the conductive wires 25, as shown in FIG. In addition, two conductive connection pieces 43 can be connected through a mesh-shaped conductive wire 35, so that the battery cells 12 connecting the two conductive connection pieces 43 are connected in parallel via the mesh-shaped conductive wire 35, as shown in FIG. 6, wherein the conductive wire 25 and the mesh The conductivity of the conductive wire 35 is higher than that of the conductive connection piece 43.

Please refer to FIG. 7, which is a side view of another embodiment of the new connection module with the function of protecting battery cells. As shown in the figure, the connection module 50 according to the embodiment of the present invention is used to connect a plurality of battery cells 12, and includes a plurality of conductive sheets 23 and a mesh-shaped conductive wire 55, wherein the mesh-shaped conductive wire 55 is used to connect each Conductive sheet 23.

Specifically, the number of the battery cores 12 and the conductive sheets 23 are the same, and can be four or more, wherein each conductive sheet 23 is connected to each battery core 12, and the mesh-shaped conductive wire 55 is connected to each conductive sheet 23, The battery cells 12 connected to the conductive sheet 23 are connected in series and parallel through the mesh-shaped conductive wire 55.

The mesh-shaped conductive wire 55 will be melted when it contacts high-temperature electrolyte or passes a large current, and achieves the purpose of protecting the battery cell 12. In addition, the mesh-shaped conductive wire 55 and the conductive sheet 23 can be made of different materials. The material of the mesh-shaped conductive wire 55 is superior to the conductive sheet 23. For example, the mesh-shaped conductive wire 55 can be a copper wire, and the conductive sheet 23 is nickel.

The above is only one of the preferred embodiments of the new model, and is not intended to limit the scope of the implementation of the new model, that is, any changes in shape, structure, features and spirit described in the patent application of the new model Modifications should be included in the patent application of this new model.

10: Connect the module 11: Board body 12: battery cell 13: Connection 15: Perforated part 151: Strip perforation 153: Strip conductive part 20: Connect the module 23: conductive sheet 25: conductive wire 26: Ministry of Public Finance 30: Connect the module 35: mesh conductive wire 351: horizontal conductive wire 353: longitudinal conductive wire 40: connection module 43: conductive connecting piece 50: connection module 55: mesh conductive wire W: width L: length H: thickness

FIG. 1 is a perspective schematic view of an embodiment of a novel connection module with the function of protecting a battery core.

FIG. 2 is a perspective schematic view of another embodiment of the new connection module with the function of protecting the battery core.

FIG. 3 is a side view of another embodiment of the new connection module with the function of protecting battery cells.

FIG. 4 is a perspective schematic view of another embodiment of the new connection module with the function of protecting the battery core.

Fig. 5 is a side view of another embodiment of the new connection module with the function of protecting battery cells.

FIG. 6 is a side view of another embodiment of the new connection module with the function of protecting battery cells.

7 is a side view of another embodiment of the new connection module with the function of protecting battery cells.

10: Connect the module

11: Board body

12: battery cell

13: Connection

15: Perforated part

151: Strip perforation

153: Strip conductive part

Claims (10)

A connection module with the function of protecting the battery core includes: A plurality of conductive sheets, each used to connect a battery cell; and A plurality of conductive wires or a mesh-shaped conductive wire is connected to the plurality of conductive sheets, so that the battery cells connected by the conductive sheet are electrically connected via the conductive wire or the mesh-shaped conductive wire, wherein the conductive wire or the mesh-shaped The conductivity of the conductive wire is higher than that of the conductive sheet. The connection module with the function of protecting the battery core as described in item 1 of the scope of the patent application includes a gold part between the conductive sheet and the conductive wire or the mesh-shaped conductive wire, and connects the conductive sheet and the conductive wire or The mesh conductive wire. The connection module having the function of protecting a battery cell as described in item 1 of the patent application scope, wherein the mesh-shaped conductive wire is connected in series and in parallel to the battery cells connected by a plurality of conductive sheets. The connection module with battery cell protection function as described in item 1 of the patent application scope, wherein the mesh-shaped conductive wire includes a plurality of horizontal conductive wires and a plurality of vertical conductive wires, and the horizontal conductive wires connect the plurality of conductive sheets, and The longitudinal conductive wires are connected to the horizontal conductive wires. A connection module with the function of protecting the battery core includes: A plurality of conductive connecting pieces, two battery cells connected in series; and A plurality of conductive wires or a mesh-shaped conductive wire is connected to the two conductive connection pieces, so that the battery cell connected to the conductive connection piece is connected in parallel through the conductive wire or the mesh-shaped conductive wire, wherein the conductive wire or the mesh-shaped conductive The conductivity of the wire is higher than that of the conductive connecting piece. The connection module with battery cell protection function as described in item 5 of the patent application scope, wherein the mesh-shaped conductive wire includes a plurality of horizontal conductive wires and a plurality of vertical conductive wires, and the horizontal conductive wires connect the plurality of conductive connecting pieces, The vertical conductive wire is connected to each horizontal conductive wire. A connection module with the function of protecting the battery core includes: A board At least two connecting parts located at both ends of the board body, and respectively used to connect at least one battery cell; and A perforation portion connects the two connection portions, so that the battery cells connected by the two connection portions are electrically connected via the perforation portion, wherein the perforation portion includes a plurality of strip-shaped perforations. As described in Item 7 of the patent application scope, the connection module having the function of protecting the battery core, wherein the perforated portion further includes a plurality of strip-shaped conductive portions adjacent to the strip-shaped perforation. A connection module with the function of protecting the battery core includes: A plurality of conductive connecting pieces, two battery cells connected in series; and A perforation portion connects the two conductive connection pieces, so that the battery cells connected by the conductive connection pieces are connected in parallel through the perforation portion, wherein the perforation portion includes a plurality of strip-shaped perforations. As described in the ninth item of the patent application scope, the connection module with the function of protecting the battery core, wherein the perforated portion further includes a plurality of strip-shaped conductive portions adjacent to the strip-shaped perforation.

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