CN220774684U - Protection device for preventing lithium battery from being too high in temperature - Google Patents
Protection device for preventing lithium battery from being too high in temperature Download PDFInfo
- Publication number
- CN220774684U CN220774684U CN202320295407.6U CN202320295407U CN220774684U CN 220774684 U CN220774684 U CN 220774684U CN 202320295407 U CN202320295407 U CN 202320295407U CN 220774684 U CN220774684 U CN 220774684U
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- Prior art keywords
- lithium battery
- shell
- battery body
- hole
- adhered
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 75
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 210000005056 cell body Anatomy 0.000 claims description 14
- 239000012212 insulator Substances 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a protection device for preventing the over-high temperature of a lithium battery, which comprises a shell, wherein a lithium battery body is arranged in the shell, pins are arranged at the top of the lithium battery body, a contact piece is arranged at the top of the shell, two support plates are adhered to the inner wall of the top end of the shell, a first through hole is formed in one side of each support plate, an insulating rod is arranged in the first through hole, a conductive block is arranged outside the insulating rod, a heat conducting column is arranged at the top of the lithium battery body, bimetallic strips are welded at one side of the top of the heat conducting column, and a rubber sleeve is arranged between the shell and the lithium battery body. According to the lithium battery body, the bimetallic strip, the insulating rod and the conductive block are arranged, when the temperature of the lithium battery body is too high, the heat conduction column conducts heat, so that the bimetallic strip is heated and deformed, the insulating rod is pushed to move the conductive block, and the conductive block leaves the pins and the contact piece, so that a circuit is disconnected, and dangers caused by continuous charging or use of the lithium battery body are avoided.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a protection device for preventing the lithium battery from being over-high in temperature.
Background
A lithium battery is a battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material, and therefore, such a battery is also called a lithium metal battery. Unlike other batteries, lithium batteries have the characteristics of high charging density, long service life, high unit cost and the like, and the temperature of the lithium battery is easy to rise in the charging or using process, so that the performance of the lithium battery is influenced, and safety accidents can be caused when the lithium battery is serious. The existing lithium battery does not have a power-off protection function when the lithium battery is used or charged and has a limited warning function when the lithium battery is at a high temperature.
Through searching, the patent with the Chinese patent publication number of CN215184434U discloses a power-off protection mechanism for lithium batteries with overhigh temperature. The utility model aims to solve the technical problems of poor protection and power-off protection. In order to solve the technical problems, the utility model provides an over-high-temperature power-off protection mechanism for a lithium battery. The over-high temperature power-off protection mechanism for the lithium battery in the patent has the following defects: the device detects temperature through temperature sensor to outage, when the battery breaks down, when unable use, the temperature rise, the battery trouble can't be for temperature sensor power supply this moment, thereby can't carry out outage operation, makes the device reliability lower.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a protection device for preventing the temperature of a lithium battery from being too high.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a prevention lithium cell temperature is too high protection device, includes the shell, the inside of shell is equipped with the lithium cell body, the top of lithium cell body is equipped with the pin, the top of shell is equipped with the contact, the top inner wall bonding of shell has two backup pads, first through-hole has been seted up to one side of backup pad, and the inside of first through-hole is equipped with the insulator spindle, the outside of insulator spindle is equipped with the conducting block, the top of lithium cell body is equipped with the heat conduction post, the top one side welding of heat conduction post has the bimetallic strip.
Further, a rubber sleeve is arranged between the shell and the lithium battery body.
Further, a partition board is arranged in the shell, and a rubber block is adhered to the bottom of the partition board.
Further, a fixing plate is adhered to the inner wall of the top end of the shell, a spring is adhered to one side of the fixing plate, a pushing plate is adhered to one end of the spring, and one side of the pushing plate is fixedly connected with the insulating rod.
Further, a limiting ring is adhered to the outer portion of the insulating rod.
Further, the top and bottom of the conductive block are welded with elastic pieces, and the elastic pieces are made of copper.
Further, a second through hole is formed in the top of the partition board, and the heat conducting column is fixedly connected with the partition board at the second through hole.
Further, a sealing plate is adhered to the inner wall of the top end of the shell, a third through hole is formed in the top end of the sealing plate, and the contact piece penetrates through the third through hole.
The beneficial effects of the utility model are as follows:
1. through setting up bimetallic strip, insulator spindle and conducting block, when lithium cell body temperature is too high, can lead heat through the heat conduction post to make bimetallic strip heat deformation, promote the insulator spindle, make the conducting block remove, the conducting block leaves pin and contact, thereby makes the circuit break, avoids the lithium cell body to continue charging or use and causes danger;
2. through setting up the rubber sleeve, the rubber sleeve is convenient for protect the lithium battery body, avoids the damage of the lithium battery body, is convenient for fix the lithium battery body through rubber block and baffle;
3. through setting up the spring, when bimetallic strip is heated and is promoted the insulator spindle and remove, can promote the spring through the push pedal, make the spring compress, after battery temperature drops, the spring can make the insulator spindle reset to be convenient for switch on again of circuit, the spacing ring can be spacing to the insulator spindle, thereby avoids the spring to promote the insulator spindle and lead to the fact the damage to bimetallic strip;
4. by arranging the elastic sheet, the conductive block is convenient to be communicated with the contact sheet and the pins, so that the circuit is convenient to be communicated;
5. by arranging the heat conducting column, the heat conduction of the lithium battery body is facilitated, so that the bimetallic strip is convenient to deform in time, and the circuit is disconnected;
6. through setting up the closing plate, the contact piece of being convenient for is sealed with shell contact position to avoid dust steam to get into the inside of shell through the contact piece.
Drawings
Fig. 1 is a schematic cross-sectional structure of a protection device for preventing lithium battery from over-temperature according to embodiment 1;
fig. 2 is a schematic cross-sectional structure diagram of a conductive block of a protection device for preventing lithium battery from over-temperature according to embodiment 1;
fig. 3 is a schematic cross-sectional structure diagram of a sealing plate of a protection device for preventing lithium battery from over-temperature in embodiment 2.
In the figure: 1 shell, 2 rubber sleeve, 3 lithium cell body, 4 baffle, 5 pin, 6 contact, 7 rubber piece, 8 fixed plate, 9 spring, 10 push pedal, 11 spacing ring, 12 backup pad, 13 insulator spindle, 14 elastic sheet, 15 conducting block, 16 bimetallic strip, 17 heat conduction post, 18 closing plate.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Example 1
Referring to fig. 1-2, a protection device for preventing the lithium battery from being too high in temperature, which comprises a housing 1, the inside of the housing 1 is provided with a lithium battery body 3, the top of the lithium battery body 3 is provided with a pin 5, the top of the housing 1 is provided with a contact piece 6, the inner wall of the top of the housing 1 is adhered with two support plates 12, one side of each support plate 12 is provided with a first through hole, the inside of each first through hole is provided with an insulating rod 13, the outside of each insulating rod 13 is provided with a conductive block 15, the top of the lithium battery body 3 is provided with a heat conducting column 17, one side of the top of each heat conducting column 17 is welded with a bimetallic strip 16, the contact piece 6 is communicated with the pin 5 of the lithium battery body 3 through the conductive blocks 15, so that the lithium battery body 3 is conveniently connected with a circuit, when the lithium battery body 3 is too high in temperature, the bimetallic strip 16 is heated and deformed by heat conduction, the insulating rods 13 are pushed, the conductive blocks 15 are moved, the conductive blocks 15 are separated from the pins 5 and the contact pieces 6, and the circuit is disconnected, and the lithium battery body 3 is prevented from being charged continuously or used to cause danger.
Wherein, be equipped with rubber sleeve 2 between shell 1 and the lithium cell body 3, be convenient for protect lithium cell body 3 through rubber sleeve 2, avoid lithium cell body 3 to damage.
Wherein, the inside of shell 1 is equipped with baffle 4, and the bottom of baffle 4 bonds and has rubber piece 7, is convenient for fix lithium cell body 3 through rubber piece 7 and baffle 4.
Wherein, the top inner wall of shell 1 bonds there is fixed plate 8, and one side of fixed plate 8 bonds there is spring 9, and the one end of spring 9 bonds there is push pedal 10, and one side and the insulating rod 13 fixed connection of push pedal 10, when bimetallic strip 16 is heated and promotes insulating rod 13 and remove, can promote spring 9 through push pedal 10, makes spring 9 compress, after the battery temperature drops, spring 9 can make insulating rod 13 reset to the switch-on again of circuit is convenient for.
Wherein, the outside of insulating rod 13 bonds and has spacing ring 11, and spacing ring 11 can be spacing to insulating rod 13 to avoid spring 9 to promote insulating rod 13 and lead to the fact the damage to bimetallic strip 16.
The top and bottom ends of the conductive block 15 are welded with the elastic sheet 14, the elastic sheet 14 is made of copper, and the conductive block 15 is conveniently connected with the contact 6 and the pin 5 through the elastic sheet 14, so that the connection of a circuit is facilitated.
Wherein, the second through-hole has been seted up at the top of baffle 4, and heat conduction post 17 is in second through-hole department and baffle 4 fixed connection, is convenient for the conduction of lithium cell body 3 heat through heat conduction post 17 to be convenient for bimetallic strip 16 in time deform, break off to the circuit.
Working principle: the contact 6 is communicated with the pin 5 of the lithium battery body 3 through the conductive block 15, so that the lithium battery body 3 is conveniently connected into a circuit, when the temperature of the lithium battery body 3 is too high, the heat conduction column 17 conducts heat, so that the bimetallic strip 16 is heated and deformed, the insulating rod 13 is pushed, the conductive block 15 is moved, and the conductive block 15 is separated from the pin 5 and the contact 6, so that the circuit is disconnected, and the danger caused by continuous charging or use of the lithium battery body 3 is avoided;
the lithium battery body 3 is protected conveniently through the rubber sleeve 2, the damage of the lithium battery body 3 is avoided, and the lithium battery body 3 is fixed conveniently through the rubber block 7 and the partition plate 4;
when the bimetal 16 is heated to push the insulating rod 13 to move, the push plate 10 pushes the spring 9 to compress the spring 9, and after the temperature of the battery is reduced, the spring 9 can reset the insulating rod 13, so that the circuit is convenient to be switched on again, the limiting ring 11 can limit the insulating rod 13, and damage to the bimetal 16 caused by pushing the insulating rod 13 by the spring 9 is avoided;
the conductive block 15 is conveniently connected with the contact 6 and the pin 5 through the elastic sheet 14, so that the connection of a circuit is facilitated;
the heat conduction of the lithium battery body 3 is facilitated through the heat conduction column 17, so that the bimetallic strip 16 is convenient to deform in time, and the circuit is disconnected.
Example 2
Referring to fig. 3, in this embodiment, in order to increase the practicability of the device, a sealing plate 18 is adhered to the inner wall of the top end of the housing 1, a third through hole is formed in the top end of the sealing plate 18, and the contact 6 penetrates through the third through hole, so that the contact 6 and the housing 1 can be conveniently sealed by the sealing plate 18, and dust and water vapor can be prevented from entering the housing 1 through the contact 6.
Working principle: the contact 6 is communicated with the pin 5 of the lithium battery body 3 through the conductive block 15, so that the lithium battery body 3 is conveniently connected into a circuit, when the temperature of the lithium battery body 3 is too high, the heat conduction column 17 conducts heat, so that the bimetallic strip 16 is heated and deformed, the insulating rod 13 is pushed, the conductive block 15 is moved, and the conductive block 15 is separated from the pin 5 and the contact 6, so that the circuit is disconnected, and the danger caused by continuous charging or use of the lithium battery body 3 is avoided;
the lithium battery body 3 is protected conveniently through the rubber sleeve 2, the damage of the lithium battery body 3 is avoided, and the lithium battery body 3 is fixed conveniently through the rubber block 7 and the partition plate 4;
when the bimetal 16 is heated to push the insulating rod 13 to move, the push plate 10 pushes the spring 9 to compress the spring 9, and after the temperature of the battery is reduced, the spring 9 can reset the insulating rod 13, so that the circuit is convenient to be switched on again, the limiting ring 11 can limit the insulating rod 13, and damage to the bimetal 16 caused by pushing the insulating rod 13 by the spring 9 is avoided;
the conductive block 15 is conveniently connected with the contact 6 and the pin 5 through the elastic sheet 14, so that the connection of a circuit is facilitated;
the heat conduction of the lithium battery body 3 is facilitated through the heat conduction column 17, so that the bimetallic strip 16 is convenient to deform in time, and the circuit is disconnected;
sealing of the contact portion of the contact 6 with the housing 1 is facilitated by the sealing plate 18, thereby avoiding dust and moisture from entering the interior of the housing 1 through the contact 6.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (1)
1. The utility model provides a prevent too high protection device of lithium cell temperature, includes shell (1), its characterized in that, the inside of shell (1) is equipped with lithium cell body (3), the top of lithium cell body (3) is equipped with pin (5), the top of shell (1) is equipped with contact (6), the top inner wall bonding of shell (1) has two backup pads (12), first through-hole has been seted up to one side of backup pad (12), and the inside of first through-hole is equipped with insulator spindle (13), the outside of insulator spindle (13) is equipped with conducting block (15), the top of lithium cell body (3) is equipped with heat conduction post (17), the top one side welding of heat conduction post (17) has bimetallic strip (16);
a rubber sleeve (2) is arranged between the shell (1) and the lithium battery body (3);
a partition board (4) is arranged in the shell (1), and a rubber block (7) is adhered to the bottom of the partition board (4);
the inner wall of the top end of the shell (1) is adhered with a fixed plate (8), one side of the fixed plate (8) is adhered with a spring (9), one end of the spring (9) is adhered with a push plate (10), and one side of the push plate (10) is fixedly connected with the insulating rod (13);
a limiting ring (11) is adhered to the outer part of the insulating rod (13);
elastic sheets (14) are welded at the top end and the bottom end of the conductive block (15), and the elastic sheets (14) are made of copper;
a second through hole is formed in the top of the partition board (4), and the heat conduction column (17) is fixedly connected with the partition board (4) at the second through hole;
the inner wall of the top end of the shell (1) is adhered with a sealing plate (18), a third through hole is formed in the top end of the sealing plate (18), and the contact piece (6) penetrates through the third through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320295407.6U CN220774684U (en) | 2023-02-17 | 2023-02-17 | Protection device for preventing lithium battery from being too high in temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320295407.6U CN220774684U (en) | 2023-02-17 | 2023-02-17 | Protection device for preventing lithium battery from being too high in temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220774684U true CN220774684U (en) | 2024-04-12 |
Family
ID=90619431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320295407.6U Active CN220774684U (en) | 2023-02-17 | 2023-02-17 | Protection device for preventing lithium battery from being too high in temperature |
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| Country | Link |
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| CN (1) | CN220774684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118604412A (en) * | 2024-08-05 | 2024-09-06 | 杭州奥昇信息技术有限公司 | Detection system for electric power storage part and use method thereof |
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2023
- 2023-02-17 CN CN202320295407.6U patent/CN220774684U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118604412A (en) * | 2024-08-05 | 2024-09-06 | 杭州奥昇信息技术有限公司 | Detection system for electric power storage part and use method thereof |
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