CN213483695U - Insurance structure, battery package and vehicle - Google Patents
Insurance structure, battery package and vehicle Download PDFInfo
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- CN213483695U CN213483695U CN202021678988.4U CN202021678988U CN213483695U CN 213483695 U CN213483695 U CN 213483695U CN 202021678988 U CN202021678988 U CN 202021678988U CN 213483695 U CN213483695 U CN 213483695U
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- connecting piece
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- fusing
- fusing part
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to a conductive connection technical field of battery, concretely relates to insurance structure, battery package and vehicle. The safety structure comprises two first connecting pieces and two second connecting pieces, wherein two ends of each second connecting piece are respectively connected with the two first connecting pieces; the second connecting piece is of a strip structure and comprises a fusing part and a plurality of connecting parts, the fusing part is connected with the connecting parts at intervals, and the resistance of the fusing part is greater than that of the connecting parts and that of the first connecting piece. When heavy current passes through the second connection piece, because the electric current of each part is the same on the second connection piece, the heat production of fusing part is higher than first connection piece and connecting portion, fusing part can break off immediately, and a plurality of fusing parts make the heat production averagely disperse on the second connection piece, and the heat can not concentrate on a certain point, can not appear drawing an arc and catching fire phenomenons such as explosion, can play heavy current short circuit protection effect.
Description
Technical Field
The utility model relates to a conductive connection technical field of battery, concretely relates to insurance structure, battery package and vehicle.
Background
Battery (Battery) refers to a device that converts chemical energy into electrical energy in a cup, tank, or other container or portion of a composite container that holds an electrolyte solution and metal electrodes to generate an electric current. Batteries are widely available, and common batteries include dry batteries, lead storage batteries, and lithium batteries. The lithium battery has the advantages of high single battery voltage, large specific energy, long storage life and good high-low temperature performance.
A plurality of lithium batteries are connected in parallel or in series to obtain a lithium battery pack, and the lithium battery pack is often used as a driving energy source in an electric vehicle. The safety structure is usually arranged in the lithium battery, when the battery pack is in short circuit or the insulation failure of the pack body and the like, a large current can pass through the safety structure, and the safety structure can be instantly fused to prevent the damage of the large current to the battery pack. The safety fuse in the prior art generates a large amount of heat when being fused, and can be instantly arcing and ignited to influence the safety of the battery pack.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides an insurance structure, battery package and vehicle for it is very big to produce the heat when solving the fusing of the insurance structure among the prior art, can draw the arc and strike a fire in the twinkling of an eye, influences the problem of battery package safety.
The utility model provides a safety structure, which comprises a first connecting piece and a second connecting piece, wherein the number of the first connecting piece is two, and two ends of the second connecting piece are respectively connected with the two first connecting pieces;
the second connecting piece is of a strip structure and comprises a fusing part and a plurality of connecting parts, the fusing part is connected with the connecting parts at intervals, and the resistance of the fusing part is greater than that of the connecting parts and that of the first connecting piece.
Optionally, the second connecting piece has a rated current, and the length of the fusing part increases with the increase of the rated current.
Optionally, the fusing part and the connecting part are made of the same material and perpendicular to the direction of the connection line of the two first connecting pieces, and the sectional area of the fusing part is smaller than that of the connecting part.
Optionally, the first connecting piece and the second connecting piece are both made of copper or aluminum.
Optionally, both ends of the second connecting piece are the connecting parts.
Optionally, the second connecting sheet is contracted towards the inside of the second connecting sheet to form the fusing part, and the fusing part is formed by the second connecting sheet and the second connecting sheet.
Optionally, the first connecting piece and the second connecting piece are both sheet-shaped structures, and the thicknesses of the first connecting piece and the second connecting piece are the same.
Optionally, the cross-sectional area of the first connecting piece is larger than that of the second connecting piece in a direction perpendicular to the connecting line of the two first connecting pieces.
The utility model also provides a battery pack, including electric core, tray and foretell insurance structure, the one end of insurance structure with electric core is connected, the other end with the tray is connected.
The utility model also provides a vehicle, including foretell battery package.
The utility model discloses a safety structure, the second connection piece includes fusing part and connecting portion, a plurality of fusing parts and a plurality of connecting portion interval connection, the resistance of fusing part is greater than the resistance of connecting portion and the resistance of first connection piece, when the heavy current passes through the second connection piece, because each partial electric current is the same on the second connection piece, the heat production of fusing part is higher than first connection piece and connecting portion, fusing part can break off immediately, and a plurality of fusing parts make the heat production evenly disperse on the second connection piece, the heat can not concentrate on a certain point, phenomenons such as arc drawing and firing explosion can not appear, can play heavy current short-circuit protection.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a front view of the safety structure of the present invention;
fig. 2 is a right side view of fig. 1.
Description of reference numerals:
1-a first connecting piece;
2-a second connecting sheet; 21-a fusing part; 22-a connecting part.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, an embodiment of the present invention provides a safety structure, which includes a first connecting piece 1 and a second connecting piece 2, where the first connecting piece 1 has two pieces, and two ends of the second connecting piece 2 are respectively connected to the two first connecting pieces 1; the second connecting piece 2 is of a strip structure and comprises a fusing part 21 and a connecting part 22, the fusing part 21 is connected with the connecting part 22 at intervals, and the resistance of the fusing part 21 is greater than that of the connecting part 22 and that of the first connecting piece 1.
Specifically, the safety structure is used for passing current, and when the current is abnormal, the safety structure is disconnected to play a protection role.
The safety structure comprises a first connecting sheet 1 and a second connecting sheet 2, wherein the first connecting sheet 1 comprises two pieces, one first connecting sheet 1 is used for being electrically connected with the battery cell, the other first connecting sheet 1 is used for being electrically connected with the tray, and the two first connecting sheets 1 are electrically connected through the second connecting sheet 2. Second connection piece 2 includes fusing portion 21 and connecting portion 22, a plurality of fusing portions 21 and a plurality of connecting portion 22 interval connection, the resistance of fusing portion 21 is greater than connecting portion 22's resistance and first connection piece 1's resistance, when heavy current passes through second connection piece 2, because the electric current of each part is the same on second connection piece 2, the heat production of fusing portion 21 is higher than first connection piece 1 and connecting portion 22, fusing portion 21 can break off immediately, and a plurality of fusing portions 21 make the heat production on average disperse on second connection piece 2, the heat can not concentrate on a certain point, phenomenons such as arcing firing explosion can not appear, can play heavy current short-circuit protection.
In one embodiment, the second connecting piece 2 has a rated current, and the length of the fusing part 21 increases with the increase of the rated current.
When rated current is big, the heat production of fusing portion 21 also can be great, works as the length of fusing portion 21 is followed when rated current's increase and length-wise uniform distribution at fusing portion 21, can not be concentrated because of the short heat production of fusing portion 21 on second connection piece 2, avoid appearing phenomena such as arc discharge and ignition explosion.
As shown in fig. 1, in an embodiment, the fusing part 21 and the connecting part 22 are made of the same material, and a cross-sectional area of the fusing part 21 is smaller than a cross-sectional area of the connecting part 22 in a direction perpendicular to a line connecting the two first connecting pieces 1.
The connecting line of the two first connecting pieces 1 is the direction of the arrow in fig. 1, and is perpendicular to the direction of the arrow, and the sectional area of the fusing part 21 is smaller than that of the connecting part 22, so that the electrical resistance of the fusing part 21 is greater than that of the connecting part 22.
As shown in fig. 1, in an embodiment, when the cross-sectional area of the fusing part 21 is increased, the resistance of the fusing part 21 is decreased, and the current is increased when the fusing part 21 is fused, so that the overcurrent capability of the fuse structure is enhanced.
In an embodiment, the first connecting piece 1 and the second connecting piece 2 are both made of copper or aluminum.
Copper or aluminium have good electrically conductive heat conductivility, and the lower advantage of resistivity, first connection piece 1 with the loss of second connection piece 2 to the electric energy is less, more energy-conserving.
As shown in fig. 1, in an embodiment, the second connecting piece 2 has an elongated structure, and the connecting portions 22 are disposed at two ends of the second connecting piece 2.
As shown in fig. 1, in an embodiment, perpendicular to a connecting direction of the two first connecting pieces 1, the second connecting piece 2 is contracted inward of the second connecting piece 2 to form the fusing part 21.
The connecting line of the two first connecting pieces 1 is in the direction of an arrow in fig. 1 and is perpendicular to the direction of the arrow, the second connecting pieces 2 contract towards the inside of the second connecting pieces 2 to form the fusing parts 21, the second connecting pieces 2 are of an integral structure, and the processing, the installation and the disassembly are simple and convenient.
In one embodiment, as shown in fig. 1, the fusing part 21 and the connecting part 22 are smoothly transited to make the appearance of the fuse structure more beautiful.
As shown in fig. 1 and 2, in an embodiment, the first connecting piece 1 and the second connecting piece 2 are both of a sheet structure, and the thicknesses of the first connecting piece 1 and the second connecting piece 2 are the same.
The first connecting piece 1 and the second connecting piece 2 are of an integral structure, and the first connecting piece 1 and the second connecting piece 2 are the same in thickness, convenient to machine and manufacture and convenient to transport and store.
As shown in fig. 1 and 2, in an embodiment, a cross-sectional area of the first connecting piece 1 is larger than a cross-sectional area of the second connecting piece 2 in a direction perpendicular to a connecting line of the two first connecting pieces 1.
The connecting line of two first connecting pieces 1 is the arrow direction in fig. 1, perpendicular to arrow direction, the sectional area of first connecting piece 1 is greater than the sectional area of second connecting piece 2, and first connecting piece 1 conveniently is used for being connected with other structures, and makes the resistance of first connecting piece 1 be less than the resistance of second connecting piece 2, and the heat production of second connecting piece 2 is minimum, can avoid the influence of the heat that produces to other structures.
Insurance structure is along with the electric current increase, and fusing part 21 damages and forms the arc that draws of little distance behind the certain degree, draws the arc heat production after with fusing part 21 burn out to the certain degree, and second connection piece 2 is because of the distance that fusing part 21 burns out the production for form and open circuit, can not arouse the arc that draws of whole circuit.
An embodiment of the utility model provides a battery pack is still provided, including electric core, tray and foretell insurance structure, insurance structure's one end with electric core is connected, the other end with the tray is connected.
Electric core and tray pass through insurance structural connection, can appear the short circuit when the inside short circuit of electric core, electric core external insulation inefficacy etc. in the insurance structure, can flow through great electric current among the insurance structure, fusing portion 21 among the insurance structure fuses because of the heat production is big, and phenomenons such as arcing firing explosion can not appear when fusing, consequently, can not lead to the fact the influence to electric core and tray, phenomenons such as the explosion of firing can not appear in the battery package yet for battery package safety and reliability more.
An embodiment of the utility model provides a vehicle is still provided, and the vehicle includes foretell battery package.
Because the battery package is when taking place the short circuit, the insurance structure in the battery package can fuse, and the battery package can not appear phenomenons such as explosion on fire for vehicle's safe and reliable more.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A safety structure is characterized by comprising a first connecting piece (1) and a second connecting piece (2), wherein the number of the first connecting piece (1) is two, and two ends of the second connecting piece (2) are respectively connected with the two first connecting pieces (1);
the second connecting piece (2) is of a strip structure and comprises a fusing part (21) and a plurality of connecting parts (22), the fusing part (21) is connected with the connecting parts (22) at intervals, and the resistance of the fusing part (21) is greater than that of the connecting parts (22) and that of the first connecting piece (1).
2. The fuse structure according to claim 1, characterized in that the second connecting piece (2) has a rated current, and the length of the fuse portion (21) increases with an increase in the rated current.
3. A fuse structure according to claim 1, characterized in that the fuse part (21) and the connecting part (22) are made of the same material, perpendicular to the direction of the line connecting the two first connecting pieces (1), and the cross-sectional area of the fuse part (21) is smaller than that of the connecting part (22).
4. A safety structure according to claim 3, wherein the first connecting tab (1) and the second connecting tab (2) are both made of copper or aluminium.
5. A safety structure according to claim 1, characterized in that the second connecting piece (2) has its two ends in the connecting portion (22).
6. A fuse structure according to claim 5, characterized in that the second connecting piece (2) is retracted inwards of the second connecting piece (2) perpendicular to the direction of the line connecting the two first connecting pieces (1) to form the fuse (21).
7. The safeguard structure according to claim 6, characterized in that the first connecting piece (1) and the second connecting piece (2) are both sheet-like structures, the thickness of the first connecting piece (1) and the second connecting piece (2) being the same.
8. A safety structure according to claim 7, wherein the cross-sectional area of the first connecting piece (1) is larger than the cross-sectional area of the second connecting piece (2) perpendicular to the direction of the line connecting the two first connecting pieces (1).
9. A battery pack comprising a cell, a tray, and the fuse structure of any of claims 1-8, wherein one end of the fuse structure is connected to the cell and the other end of the fuse structure is connected to the tray.
10. A vehicle characterized by comprising the battery pack according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021678988.4U CN213483695U (en) | 2020-08-11 | 2020-08-11 | Insurance structure, battery package and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021678988.4U CN213483695U (en) | 2020-08-11 | 2020-08-11 | Insurance structure, battery package and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213483695U true CN213483695U (en) | 2021-06-18 |
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ID=76360563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021678988.4U Active CN213483695U (en) | 2020-08-11 | 2020-08-11 | Insurance structure, battery package and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213483695U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115548600A (en) * | 2021-06-30 | 2022-12-30 | 宁德时代新能源科技股份有限公司 | Battery monomer, battery and consumer |
-
2020
- 2020-08-11 CN CN202021678988.4U patent/CN213483695U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115548600A (en) * | 2021-06-30 | 2022-12-30 | 宁德时代新能源科技股份有限公司 | Battery monomer, battery and consumer |
| CN115548600B (en) * | 2021-06-30 | 2023-11-03 | 宁德时代新能源科技股份有限公司 | Battery monomer, battery and electric equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220415 Address after: No. 3009, BYD Road, Pingshan District, Shenzhen, Guangdong 518118 Patentee after: BYD Co.,Ltd. Patentee after: Changsha Fudi Battery Co., Ltd Address before: 518118 BYD Road, Pingshan New District, Shenzhen, Guangdong 3009 Patentee before: BYD Co.,Ltd. |