CN215342762U - Integrated module end plate that has extinguishing device and battery module thereof - Google Patents
Integrated module end plate that has extinguishing device and battery module thereof Download PDFInfo
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- CN215342762U CN215342762U CN202121536737.7U CN202121536737U CN215342762U CN 215342762 U CN215342762 U CN 215342762U CN 202121536737 U CN202121536737 U CN 202121536737U CN 215342762 U CN215342762 U CN 215342762U
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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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Abstract
The utility model discloses a module end plate integrated with a fire extinguishing device and a battery module thereof. The battery module comprises a module frame and a plurality of batteries arranged in the module frame, wherein the top ends of at least two batteries in the batteries are provided with battery safety valves, and the module frame comprises module side plates and module end plates; the module end plate is a plate body with a certain thickness, the module end plate comprises a fixing plate, the fixing plate is a plate body made of metal, and a groove is formed in the inner end face, facing the battery, of the fixing plate after the fixing plate is installed; the groove is internally provided with a fire extinguishing device, the fire extinguishing device comprises a shell body which is shaped in the groove, fire extinguishing materials and temperature sensing lines which are packaged in the shell body, and the shell body is made of nonmetal; when a plurality of batteries set up in the module frame, the last temperature sensing line of extinguishing device is located the top of battery to the temperature sensing line is just to battery safety valve. The utility model reduces/prevents the possibility of thermal runaway of the battery through the fire extinguishing device arranged on the end plate of the module.
Description
Technical Field
The utility model belongs to the technical field of power batteries, and relates to a module end plate integrated with a fire extinguishing device and a battery module thereof.
Background
In order to obtain higher energy/power, a plurality of batteries are often connected to form a module/battery pack, in the current power battery, if the battery is abused or misused, explosion is likely to occur when gas, a large amount of heat or other substances are likely to be generated inside the battery, and in order to obtain high volume energy, the space between the plurality of batteries is relatively small, so that the abnormal battery is easy to cause peripheral chain reaction and even thermal runaway.
In order to solve the problem, a fire extinguishing tank filled with fire extinguishing agents is often additionally used in the industry, certain pressure is pre-installed in the fire extinguishing tank, the fire extinguishing tank is connected into a battery pack through a pipe, a closing valve is arranged on the pipeline, the closing valve is opened in time when a fire disaster happens, the fire extinguishing agents are injected into a battery box through the pressure in the fire extinguishing tank, the fire extinguishing/cooling purpose is achieved, and the disaster is prevented from further expanding.
Compared with the traditional battery pack without a fire extinguishing device, the battery pack has certain fire extinguishing function, but the technology has the following defects:
(1) a pressure tank with certain pressure is required to be additionally equipped;
(2) the pressure tank needs to be measured and checked for safety at regular intervals;
(3) installing the pressure tank at an additional place;
(4) a plurality of accessory accessories such as valve bodies, conveying pipelines and sealing connecting pieces for entering and exiting the box body are needed;
(5) the triggering mode is not very reliable, the switch valve body is triggered by temperature induction/salt mist induction in the battery pack, and the failure risk is high.
SUMMERY OF THE UTILITY MODEL
The problems to be solved by the utility model are as follows: the utility model reduces/prevents the possibility of thermal runaway of the battery through the fire extinguishing device arranged in the end plate of the module and the optimization of the battery module.
In order to solve the problems, the utility model adopts the following scheme:
a module end plate integrated with a fire extinguishing device is a plate body with a certain thickness and comprises a fixing plate and the fire extinguishing device; a groove is formed in the inner end face, which faces the battery, of the fixing plate after the fixing plate is installed; the fire extinguishing device is arranged in the groove; the fire extinguishing device comprises a shell which is shaped in the groove and fire extinguishing materials which are packaged in the shell.
Further, according to the module end plate of the present invention, the fixing plate is a plate body made of metal; the shell is made of a non-metal material which can be melted by high-temperature substances rushed out after the battery safety valve is exploded.
Further, according to the module end plate of the present invention, the fire extinguishing material includes one or a mixture of more of aerosol fire extinguishing agent, hexafluoropropane, heptafluoropropane, perfluorohexane, perfluorohexanone, perfluoropolyether, carbon dioxide, ammonium perfluorooctanoate, ethoxypentafluorocyclotriphosphazene, hexafluoropropylene trimer, trifluoroethyl phosphate, perfluorononene, hydrofluorocarbon compound, cac 2.6h2O, Na2SO 4.10h2O, CaBr 2.6h2O, CH3 coona.3h2O, paraffin and various acid esters, aliphatic hydrocarbons, aliphatic acids, alcohols, and polyenol; the hydrofluorocarbon compound comprises R134A, R125, R32, R407C, R410A and R152.
Further, according to the module end plate provided by the utility model, the housing is provided with an accommodating cavity for encapsulating the fire extinguishing material, the top of the accommodating cavity is provided with an opening for molding, and the opening is hermetically connected with a sealing cover; and the shell is also provided with an injection port communicated with the accommodating cavity.
Further, according to the module end plate provided by the utility model, the sealing cover is provided with at least one vent valve, the vent valve comprises a valve cover and a thin groove arranged on the sealing cover, the valve cover is plugged into the thin groove in an interference manner to cover the thin groove, the bottom surface of the thin groove is provided with a weak structure, and the weak structure is a sunk groove or a nick which is connected end to end.
Further, according to the module end plate of the present invention, the top of the housing is further provided with an output electrode mounting seat at one side of the opening; the top of fixed plate is provided with corresponding spacing groove, works as the casing sets up when on the fixed plate, output utmost point mount pad card is gone into the spacing groove.
Further, according to the module end plate provided by the utility model, a plurality of grid-shaped grooves are distributed on the surface of the shell, which is attached to the groove.
Further, according to the module end plate of the present invention, the two sides of the housing are respectively provided with the extension plates, when the fire extinguishing apparatus is disposed on the fixing plate, the housing is disposed in the groove, and the extension plates on the two sides are adhered to the inner end surfaces on the two sides of the groove, so that the fire extinguishing apparatus is fixed on the fixing plate.
Further, according to the module end plate provided by the utility model, the fire extinguishing device further comprises a temperature sensing line, and the temperature sensing line is arranged on the shell and connected with a medicament bag arranged in the fire extinguishing device.
A battery module comprises a module frame and a plurality of batteries arranged in the module frame, wherein the top ends of at least two batteries in the batteries are provided with battery safety valves; the module frame is characterized by comprising module side plates and the module end plates; when a plurality of batteries are arranged in the module frame, the temperature sensing line on the fire extinguishing device is positioned at the top of the batteries, and the temperature sensing line is opposite to the battery safety valve.
The utility model has the following technical effects: the fire extinguishing device is arranged on the end plate of the module, so that the possibility of thermal runaway of the battery is reduced/prevented.
Drawings
Fig. 1 is an exploded view illustrating a battery module according to the present invention.
Fig. 2 is an exploded view of the module end plate of the present invention.
Fig. 3 is a structural view of the fire extinguishing apparatus of the present invention.
Wherein the content of the first and second substances,
1 is a module frame, 11 is a module side plate, 12 is a module end plate, 121 is a fixing plate, 1211 is an inner end surface, 1212 is a limit groove, 2 is a battery, 21 is a battery safety valve, 3 is a wiring harness isolation plate, 31 is a fire extinguishing hole, 4 is a module upper cover, 5 is a groove, 6 is a fire extinguishing device, 61 is a shell, 611 is an accommodating cavity, 6111 is an opening, 612 is an output electrode mounting seat, 613 is an injection port, 614 is an extension plate, 62 is a fire extinguishing material, 7 is a sealing cover, 71 is an exhaust valve, 711 is a valve cover, 712 is a thin groove, 7121 is a weak structure, 8 is a grid groove, and 81 is a reinforcing rib.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a battery module includes a module frame 1, a plurality of batteries 2 disposed in the module frame 1, a harness isolation plate 3, and a module upper cover 4 disposed at the top of the battery module; the top ends of at least two batteries 2 in the plurality of batteries 2 are provided with battery safety valves 21; the opening pressure of the battery safety valve 21 is set to be 0.02-1.00 MPa, and 0.6MPa is preferably set for opening. A bus bar for connecting the battery 2 and a collecting circuit board for collecting the temperature and the voltage of the battery 2 are arranged on the wire harness isolation plate 3; in order to facilitate the use of the battery safety valve 21, the harness isolation plate 3 is provided with a corresponding fire extinguishing hole 31. The module frame 1 comprises module side plates 11 and module end plates 12; the module end plate 12 is a module end plate integrated with a fire extinguishing apparatus according to the present invention. Referring to fig. 2, the module end plate 12 is a plate with a certain thickness, the module end plate 12 includes a fixing plate 121, and the fixing plate 121 is a plate made of metal, such as AL, stainless steel, and the like. The fixing plate 121 is provided with a groove 5 on an inner end surface 1211 for facing the battery 2 after being mounted; the fire extinguishing device 6 is arranged in the groove 5, and the fire extinguishing device 6 comprises a shell 61 which is profiled on the groove 5, fire extinguishing material 62 which is encapsulated in the shell 61 and a temperature sensing wire (not shown). Specifically, the module frame 1 includes two module side plates 11 and two module end plates 12; two module end plates 12 set up respectively at the both ends of battery 2 array orientation, and two module curb plates 11 set up respectively in the both sides of battery 2 array orientation, and the both ends of module curb plate 11 are connected with two module end plates 12 respectively, through module curb plate 11 and module end plate 12 from a plurality of batteries 2 of both ends and both sides centre gripping, module upper cover 4 sets up at the top of battery 2, and pencil division board 3 sets up between module upper cover 4 and battery 2.
In this embodiment, the case 61 is made of a non-metallic material that can be melted by a high-temperature substance that is ejected after the battery safety valve 21 is exploded. Specifically, the material for preparing the housing 61 is preferably made of plastic having flame retardant properties, such as PC or ABS. Thus, when the battery safety valve 21 of the battery 2 bursts, the rushed high-temperature substance can locally melt the case 61, so that the fire extinguishing material 62 sealed inside the case 61 releases the fire extinguishing.
In this embodiment, the temperature sensing wire is a single ignition wire. One end of the temperature sensing wire faces the battery safety valve 21 of the battery 2. When the battery safety valve 21 of the battery 2 bursts, the high temperature causes the temperature sensitive wire to be ignited. The temperature sensing line is connected with a medicament bag arranged in the fire extinguishing device 6. When the temperature sensing wire is ignited, the agent in the agent pack provided in the fire extinguishing device 6 is ignited, and the agent in the agent pack is ignited to burst the case 61, so that the fire extinguishing material 62 sealed in the case 61 is released to extinguish the fire.
Specifically, the fire extinguishing apparatus 6 of the present embodiment employs a dual trigger to trigger fire extinguishing. Those skilled in the art will appreciate that the fire extinguishing device 6 of the present embodiment may alternatively be implemented. For example, the fire extinguishing device 6 may not be provided with a temperature sensing wire.
Furthermore, the housing 61 is provided with an accommodating cavity 611 for encapsulating the fire extinguishing material 62, the top of the accommodating cavity 611 is provided with an opening 6111 for forming the accommodating cavity 611, the opening 6111 is connected with a sealing cover 7 in a sealing manner, and the sealing cover 7 is provided with at least one exhaust valve 71; the housing 61 is further provided with an inlet 613 communicating with the housing cavity 611. Specifically, the sealing cover 7 may be made of the same material as the housing 61, and may be sealed and connected to the opening 6111 by a hot melting method, an adhesive method, an interference plug, or the like. Injecting the fire extinguishing material 62 into the housing 61 through the injection port 613, wherein the injection port 613 is sealed when the injection of the fire extinguishing material 62 into the housing 61 is completed; the sealing nails or sealing beads made of the same material as the housing 61 may be sealed by heat fusion, by adhesion, by interference fit, or the like. In this embodiment, a sealing nail with a taper shape and an interference size of 0.02-1.00 mm is preferably used to be strongly plugged into the injection port 613, and then the injection port is reinforced and sealed by hot melting, that is, the embodiment uses a combination of interference plugging and hot melting. Those skilled in the art will understand that the housing 61 may be provided with a vent hole communicating with the receiving cavity 611, and the speed of pouring the fire extinguishing material 62 is increased by exhausting through the vent hole during pouring; the hole is simultaneously sealed after the infusion is complete.
As shown in fig. 3, in order to facilitate the directional discharge of the fire extinguishing material 62, the prevention of the damage after the thermal runaway of the battery 2 is quickly and effectively achieved. The exhaust valve 71 comprises a valve cover 711 and a thin groove 712 arranged on the sealing cover 7, the valve cover 711 is inserted into the thin groove 712 in an interference mode to cover the thin groove 712, the thickness of the bottom surface of the thin groove 712 can be 1/2 of the thickness of the sealing cover 7, in order to improve the punching speed of the fire extinguishing material 62, a weak structure 7121 can be further arranged on the bottom surface of the thin groove 712, and the weak structure 7121 can be a sunken groove or a notch which is connected end to end.
Further, the top of the housing 61 is further provided with an output pole mounting seat 612 on one side of the opening 6111; the top of the fixing plate 121 is provided with a corresponding stopper groove 1212, and when the housing 61 is disposed on the fixing plate 121, the output electrode mounting base 612 is caught in the stopper groove 1212. The fire extinguishing device 6 installed is limited through the limiting groove 1212, and the problem that the fire extinguishing device 6 is installed to cause position deviation is prevented. Additionally integrating the output pole mount 612 on the module end plate 12 further improves mounting efficiency.
Further, a plurality of grid grooves 8 are distributed on the surface, attached to the groove 5, of the shell 61, the installation strength of the shell 61 is further improved through the grid grooves 8, and the grid grooves 8 are formed by a plurality of horizontal reinforcing ribs 81 and vertical reinforcing ribs 81 in a mutually staggered mode.
Further, the extension plates 614 are respectively arranged on two sides of the shell 61, when the fire extinguishing device 6 is arranged on the fixing plate 121, the shell 61 is arranged in the groove 5, the extension plates 614 on two sides can be adhered to the inner end faces 1211 on two sides of the groove 5 through the arranged gum, so that the fire extinguishing device 6 is fixed on the fixing plate 121, the installation of the module end plate 12 can be facilitated, and the production efficiency is improved.
Those skilled in the art will appreciate that there are many alternative fire-extinguishing materials 62 under the above-described configuration. Specifically, the fire extinguishing material 62 is required to have flame retardant, heat insulating, and fire extinguishing effects after being released. Such as either a fire suppressant, or a coolant, or a phase change material. Specifically, such fire extinguishing materials 62 include, without limitation, aerosol fire extinguishing agents, hexafluoropropane, heptafluoropropane, perfluorohexane, perfluorohexanone, perfluoropolyether, carbon dioxide, ammonium perfluorooctanoate, ethoxypentafluorocyclotriphosphazene, hexafluoropropylene trimer, trifluoroethyl phosphate, perfluorononene, hydrofluorocarbon compounds, cac 2.6h2O, Na2SO 4.10h2O, CaBr 2.6h2O, CH3 coona.3h2O, paraffins and mixtures of one or more of various acid esters, aliphatic hydrocarbons, aliphatic acids, alcohols, and polyenols. Among them, the hydrofluorocarbon compounds include, but are not limited to, R134A, R125, R32, R407C, R410A, R152, and the like. The aerosol fire extinguishing agent can be K type aerosol, S type aerosol and the like; those skilled in the art will appreciate that the fire extinguishing material 62 will also generally need to be a material that is sufficiently non-toxic and non-polluting to the environment.
In addition, it should be noted that the battery 2, the harness isolation plate 3 provided with the bus bar and the collecting circuit board, and the module upper cover 4 are familiar to those skilled in the art and are not in the scope discussed in the present invention, and the description of the present specification is omitted for illustration.
Claims (9)
1. A module end plate integrated with a fire extinguishing device is a plate body with a certain thickness, and is characterized in that the module end plate comprises a fixing plate and the fire extinguishing device; a groove is formed in the inner end face, which faces the battery, of the fixing plate after the fixing plate is installed; the fire extinguishing device is arranged in the groove; the fire extinguishing device comprises a shell which is shaped in the groove and fire extinguishing materials which are packaged in the shell.
2. The module end plate of claim 1 wherein the retaining plate is a plate body made of metal; the shell is made of a non-metal material which can be melted by high-temperature substances rushed out after the battery safety valve is exploded.
3. The module end plate of claim 1, wherein the housing is provided with a receiving cavity for encapsulating the fire extinguishing material, the top of the receiving cavity is provided with an opening for molding, and a sealing cover is hermetically connected to the opening; and the shell is also provided with an injection port communicated with the accommodating cavity.
4. The module end plate of claim 3, wherein the sealing cover is provided with at least one vent valve, the vent valve comprises a valve cover and a thin groove arranged on the sealing cover, and the valve cover is plugged into the thin groove by interference to cover the thin groove; the bottom surface of the thin groove is also provided with a weak structure which is a sunk groove or a nick connected end to end.
5. The module end plate of claim 3 wherein the top of the housing is further provided with an output pole mount on one side of the opening; the top of fixed plate is provided with corresponding spacing groove, works as extinguishing device sets up when on the fixed plate, the output pole mount pad card is gone into the spacing groove.
6. The module end plate of claim 1 wherein a plurality of grid grooves are disposed on the face of said housing that engages said grooves.
7. The module end plate of claim 1, wherein the housing is provided at both sides thereof with extension plates, respectively, and the housing is seated in the groove when the fire extinguishing apparatus is seated on the fixing plate, and the extension plates at both sides are adhered to the inner end surfaces at both sides of the groove, so that the fire extinguishing apparatus is fixed to the fixing plate.
8. The module end plate of any of claims 1-7, wherein the fire suppression device further comprises a temperature sensing wire disposed on the housing and connected to a medicament pack disposed within the fire suppression device.
9. A battery module comprises a module frame and a plurality of batteries arranged in the module frame, wherein the top ends of at least two batteries in the batteries are provided with battery safety valves; wherein the module frame comprises module side plates and the module end plates of claim 8; when a plurality of batteries are arranged in the module frame, the temperature sensing line on the fire extinguishing device is positioned at the top of the batteries, and the temperature sensing line is opposite to the battery safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121536737.7U CN215342762U (en) | 2021-07-07 | 2021-07-07 | Integrated module end plate that has extinguishing device and battery module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121536737.7U CN215342762U (en) | 2021-07-07 | 2021-07-07 | Integrated module end plate that has extinguishing device and battery module thereof |
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| Publication Number | Publication Date |
|---|---|
| CN215342762U true CN215342762U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121536737.7U Active CN215342762U (en) | 2021-07-07 | 2021-07-07 | Integrated module end plate that has extinguishing device and battery module thereof |
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| CN (1) | CN215342762U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114699678A (en) * | 2022-03-30 | 2022-07-05 | 清华大学 | Miniature fire extinguishing device and fire extinguishing method of lithium ion battery |
| CN115224422A (en) * | 2022-07-21 | 2022-10-21 | 深圳供电局有限公司 | Isolating device and electric automobile |
| CN115224422B (en) * | 2022-07-21 | 2024-05-31 | 深圳供电局有限公司 | Isolating device and electric automobile |
-
2021
- 2021-07-07 CN CN202121536737.7U patent/CN215342762U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114699678A (en) * | 2022-03-30 | 2022-07-05 | 清华大学 | Miniature fire extinguishing device and fire extinguishing method of lithium ion battery |
| CN115224422A (en) * | 2022-07-21 | 2022-10-21 | 深圳供电局有限公司 | Isolating device and electric automobile |
| CN115224422B (en) * | 2022-07-21 | 2024-05-31 | 深圳供电局有限公司 | Isolating device and electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220128 Address after: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli new energy battery technology Co.,Ltd. Address before: 215500 room 808, No. 1, Southeast Avenue, Changshu high tech Industrial Development Zone, Changshu, Suzhou, Jiangsu Patentee before: Jiangsu Zhengli new energy battery technology Co.,Ltd. Patentee before: JIANGSU TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: DONGGUAN TAFEL NEW ENERGY TECHNOLOGY Co.,Ltd. Patentee before: Jiangsu Tafel Power System Co.,Ltd. |
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| TR01 | Transfer of patent right |