CN216061747U - Closed lithium battery module with hot melt extinguishing device - Google Patents
Closed lithium battery module with hot melt extinguishing device Download PDFInfo
- Publication number
- CN216061747U CN216061747U CN202121751128.3U CN202121751128U CN216061747U CN 216061747 U CN216061747 U CN 216061747U CN 202121751128 U CN202121751128 U CN 202121751128U CN 216061747 U CN216061747 U CN 216061747U
- Authority
- CN
- China
- Prior art keywords
- hot melt
- lithium battery
- box body
- pipe
- extinguishing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 23
- 239000012943 hotmelt Substances 0.000 title claims description 48
- 238000002844 melting Methods 0.000 claims abstract description 24
- 230000008018 melting Effects 0.000 claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000004927 fusion Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004001 molecular interaction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to a closed lithium battery module with a hot melting fire extinguishing device, which comprises a box body, wherein a plurality of storage batteries are placed in the box body, the closed lithium battery module also comprises a hot melting pipe, the hot melting pipe penetrates through the outer wall of the box body, one end of the hot melting pipe extends to the inner cavity of the box body, the end, extending to the inner cavity of the box body, of the hot melting pipe is closed, the other end of the hot melting pipe is communicated with a high-pressure storage tank, and a high-pressure fluid fire extinguishing agent is stored in the high-pressure storage tank. The closed lithium battery module with the hot-melting fire extinguishing device can effectively avoid ignition of the lithium battery pack and greatly improve the safety performance of the lithium battery. Compared with the existing sensor type fireproof battery pack, the technical scheme does not need a power supply, so that the sensor type fireproof battery pack is not influenced by circuit fuse fusing, power failure and the like, and has higher safety.
Description
Technical Field
The utility model belongs to the technical field of battery modules, and particularly relates to a closed lithium battery module with a hot-melting fire extinguishing device.
Background
With the development of new energy industry, electric vehicles are more and more popular, but the battery of the electric vehicle is on fire often, so that the safety performance of the electric vehicle is paid great attention. However, the battery is affected by many factors, wherein the influence caused by thermal runaway of the battery is very large, and the internal or external fire of the battery pack can possibly spread, namely, the internal fire is affected by the safety of vehicles and members outside the battery pack, or the vehicles are on fire and spread to the internal of the battery pack, so that the electric core and the battery module in the battery pack are on fire and explode, and the dangerous situation is aggravated. Therefore, the link of preventing heat expansion and fire spreading is particularly important.
In the related art, the upper case of the battery pack is generally designed to be combined with a fire-proof cloth (patent CN 206422120U) to seal and protect the battery from fire. But this can only block the burning cell and reduce the time of the spread of the burning, which can only delay, but not reduce and extinguish the fire of the cell.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a closed lithium battery module with a hot-melting fire extinguishing device.
The utility model solves the technical problems through the following technical means: closed lithium battery module with hot melt extinguishing device, the power distribution box comprises a box body, placed a plurality of batteries in the box, still include the hot melt pipe, the hot melt pipe runs through the box outer wall, hot melt pipe one end extends to the box inner chamber, and the one end that the hot melt pipe extends to the box inner chamber is sealed, the other end intercommunication of hot melt pipe has high-pressure storage jar, highly compressed storage has the fluid fire extinguishing agent in the high-pressure storage jar.
As an improvement of the technical scheme, the part of the hot melting pipe, which is positioned in the inner cavity of the box body, is arranged at the top of the inner cavity of the box body in a zigzag mode.
As an improvement of the technical scheme, the box body is further provided with a plurality of hot melting plates, the hot melting plates and the storage battery are arranged alternately, a closed cavity is formed in the middle of each hot melting plate, and the cavity is communicated with the hot melting pipe through a pipeline.
As an improvement of the technical scheme, the outer wall of the hot melting plate is fixedly connected with a plurality of bulges, and the end parts of the bulges, far away from the hot melting plate, are contacted with the storage battery.
As an improvement of the technical scheme, the box body is provided with a pressure relief valve.
As an improvement of the technical scheme, the box body is provided with a cannula, and the cannula penetrates through the wall of the box body.
The utility model has the beneficial effects that: the closed lithium battery module with the hot-melting fire extinguishing device can effectively avoid ignition of the lithium battery pack and greatly improve the safety performance of the lithium battery.
Compared with the existing sensor type fireproof battery pack, the technical scheme does not need a power supply, so that the sensor type fireproof battery pack is not influenced by circuit fuse fusing, power failure and the like, and has higher safety.
Specifically, when the battery is on fire, the temperature rises to soften and melt the hot melt pipe or the hot melt plate, and the fire extinguishing agent stored at high pressure is sprayed out from the softened and melted part of the hot melt pipe or the hot melt plate to extinguish the fire.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
FIG. 3 is a schematic view of the thermal fuse tube layout of the present invention.
FIG. 4 is a schematic view of a melt plate configuration of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" 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.
Examples
As shown in fig. 1-4, this embodiment closed lithium battery module with hot melt extinguishing device, including box 1, a plurality of batteries 2 have been placed in box 1, still include hot melt pipe 3, hot melt pipe 3 runs through 1 outer wall of box, 3 one end of hot melt pipe extends to 1 inner chamber of box, and the one end that hot melt pipe 3 extended to 1 inner chamber of box is sealed, the other end intercommunication of hot melt pipe 3 has high-pressure storage jar 4, highly compressed storage has the fluid fire extinguishing agent in high-pressure storage jar 4. The closed lithium battery module with the hot-melting fire extinguishing device can effectively avoid ignition of the lithium battery pack and greatly improve the safety performance of the lithium battery. Compared with the existing sensor type fireproof battery pack, the technical scheme does not need a power supply, so that the sensor type fireproof battery pack is not influenced by circuit fuse fusing, power failure and the like, and has higher safety.
The hot melting pipe 3 is arranged at the top of the inner cavity of the box body 1 in a zigzag mode at the part of the inner cavity of the box body 1. So that the hot melting pipe 3 can pass through more positions, thereby being beneficial to the corresponding fire-striking positions to extinguish fire on the fire-striking positions.
The box 1 is further provided with a plurality of hot melt plates 5, the hot melt plates 5 and the storage battery 2 are alternately arranged, a closed cavity 6 is formed in the middle of each hot melt plate 5, and the cavity 6 is communicated with the hot melt pipe 3 through a pipeline. The melt plate 5 has a larger area corresponding to the location of the fire.
Specifically, when the battery is on fire, the temperature rise can soften and melt the hot melt pipe 3 or the hot melt plate 5, and the fire extinguishing agent stored at high pressure can be sprayed out from the softened and melted part of the hot melt pipe 3 or the hot melt plate 5 to play a role in extinguishing the fire.
The hot melt pipe 3 or the hot melt plate is made of PE, PP or PVC materials and can resist the temperature of 130-250 ℃.
The outer wall of the hot melt plate 5 is fixedly connected with a plurality of protrusions 51, and the end part, far away from the hot melt plate 5, of each protrusion 51 is in contact with the storage battery 2. The protrusion 51 allows a gap between the melt plate 5 and the battery 2, through which the fire extinguishing agent can flow.
And a pressure relief valve is arranged on the box body 1. The insertion pipe 7 can also be arranged on the box body 1, the insertion pipe 7 penetrates through the wall of the box body 1, external equipment can be realized by using the insertion pipe 7, and the communication of a plurality of box bodies 1 can be realized through the insertion pipe 7.
The heat generation of the lithium ion battery is generally considered to be divided into four parts: irreversible resistance heat, reversible reaction entropy heat, mixed heat, phase transition heat.
The latter two have relatively low heat production rates and are generally negligible.
Considering only resistance heat and reaction entropy heat, a Bernardi battery heat generation model can be obtained:
according to a Bernardi battery heat production model, under the same current condition, the heat production rates of the charging and discharging working condition resistors are equal; the reason for the temperature difference in the charge-discharge conditions is the latter half of the heat generation pattern.
The discharge current is positive, so when the entropy thermal coefficient is positive, the entropy thermal is negative, the endothermic reaction is represented, and when the entropy thermal coefficient is negative, the exothermic reaction is represented;
the charging current is negative, so when the entropy thermal coefficient is positive, the entropy thermal is positive, the exothermic reaction is represented, and when the entropy thermal coefficient is negative, the endothermic reaction is represented.
Thus, for the discharge regime, the overall chemical reaction is exothermic; for charging conditions, the overall chemical reaction is endothermic.
So the heat production of the discharge working condition is higher than that of the charge working condition. Therefore, it is necessary to prevent the battery 2 from generating heat to soften or melt the heat fusion tube 3 or the heat fusion plate 5 during discharging, and the protrusion 51 allows a gap to be formed between the heat fusion plate 5 and the battery 2, so as to prevent the heat from accumulating to overheat and soften or melt the heat fusion tube 3 or the heat fusion plate 5.
Due to the adoption of high-pressure storage, when the fire extinguishing agent is sprayed out from the softening and melting part of the hot melting pipe 3 or the hot melting plate 5, the pressure is reduced after throttling, the mass specific volume is increased, the distance between molecules is increased, and the potential energy of molecular interaction is increased. The flow energy is generally not much changed, so that the kinetic energy of the molecular motion is only reduced to convert it into potential energy. The movement of the molecules is slowed, as indicated by the decrease in temperature.
Thereby when continuously spouting extinguishing agent, can play the cooling effect to in the box 1, therefore can realize the cooling and put out a fire or restrain the intensity of a fire.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. Closed lithium cell module with hot melt extinguishing device, including box (1), a plurality of battery (2), its characterized in that have been placed in box (1): still include hot melt pipe (3), hot melt pipe (3) run through box (1) outer wall, hot melt pipe (3) one end extends to box (1) inner chamber, and hot melt pipe (3) extend to the one end of box (1) inner chamber and seal, the other end intercommunication of hot melt pipe (3) has high-pressure storage jar (4), the high-pressure storage of storage jar (4) internal high pressure has the fluid fire extinguishing agent.
2. The enclosed lithium battery module with a hot melt fire extinguishing device as claimed in claim 1, wherein: the hot melting pipe (3) is arranged at the top of the inner cavity of the box body (1) in a zigzag mode at the part of the inner cavity of the box body (1).
3. The enclosed lithium battery module with a hot melt fire extinguishing device as claimed in claim 1, wherein: the box (1) is further provided with a plurality of hot melt plates (5), the hot melt plates (5) are alternately arranged with the storage battery (2), the middle parts of the hot melt plates (5) are provided with closed cavities (6), and the cavities (6) are communicated with the hot melt pipes (3) through pipelines.
4. The enclosed lithium battery module with a hot melt fire extinguishing device as claimed in claim 3, wherein: the hot melt plate is characterized in that a plurality of protrusions (51) are fixedly connected to the outer wall of the hot melt plate (5), and the end, far away from the hot melt plate (5), of each protrusion (51) is in contact with the storage battery (2).
5. The enclosed lithium battery module with a hot melt fire extinguishing device as claimed in claim 1, wherein: and a pressure relief valve is arranged on the box body (1).
6. The enclosed lithium battery module with a hot melt fire extinguishing device as claimed in claim 1, wherein: an insertion pipe (7) is installed on the box body (1), and the insertion pipe (7) penetrates through the wall of the box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121751128.3U CN216061747U (en) | 2021-07-29 | 2021-07-29 | Closed lithium battery module with hot melt extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121751128.3U CN216061747U (en) | 2021-07-29 | 2021-07-29 | Closed lithium battery module with hot melt extinguishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216061747U true CN216061747U (en) | 2022-03-18 |
Family
ID=80666909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121751128.3U Expired - Fee Related CN216061747U (en) | 2021-07-29 | 2021-07-29 | Closed lithium battery module with hot melt extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216061747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115920273A (en) * | 2022-12-07 | 2023-04-07 | 珠海格力智能装备有限公司 | Battery fire protection device and AGV car |
-
2021
- 2021-07-29 CN CN202121751128.3U patent/CN216061747U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115920273A (en) * | 2022-12-07 | 2023-04-07 | 珠海格力智能装备有限公司 | Battery fire protection device and AGV car |
| CN115920273B (en) * | 2022-12-07 | 2024-03-15 | 珠海格力智能装备有限公司 | Battery fire protection device and AGV car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220318 |