CN215989025U - End plate for battery module and battery module - Google Patents
End plate for battery module and battery module Download PDFInfo
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- CN215989025U CN215989025U CN202121536731.XU CN202121536731U CN215989025U CN 215989025 U CN215989025 U CN 215989025U CN 202121536731 U CN202121536731 U CN 202121536731U CN 215989025 U CN215989025 U CN 215989025U
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- end plate
- fire extinguishing
- hole
- battery
- battery module
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- CBTAIOOTRCAMBD-UHFFFAOYSA-N 2-ethoxy-2,4,4,6,6-pentafluoro-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound CCOP1(F)=NP(F)(F)=NP(F)(F)=N1 CBTAIOOTRCAMBD-UHFFFAOYSA-N 0.000 description 2
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Images
Classifications
-
- 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
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses an end plate for a battery module and the battery module. The battery module includes module frame and a plurality of battery of setting in the module frame, and the top that has two batteries at least in a plurality of batteries is provided with the battery safety valve, and the module frame includes curb plate and end plate. The end plate is a plate body with a certain thickness, at least one accommodating hole is formed in the end plate, and a fire extinguishing device is arranged in the accommodating hole. The fire suppression apparatus includes a housing having a contoured receiving aperture. The shell is made of a low melting point alloy. The fire extinguishing material is accommodated in the shell, and one end of the temperature sensing line is arranged on the shell and is connected with a medicament bag arranged in the fire extinguishing device. 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 and prevents the possibility of thermal runaway of the battery through the fire extinguishing device arranged on the end plate.
Description
Technical Field
The utility model belongs to the technical field of power batteries, and relates to an end plate for a battery module and the battery module.
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 and the optimization of the battery module.
In order to solve the problems, the utility model adopts the following scheme:
an end plate for a battery module is a plate body with a certain thickness, at least one accommodating hole is formed in the end plate, and a fire extinguishing device is arranged in the accommodating hole; the fire extinguishing device includes a housing contoured to the receiving hole; fire extinguishing materials are accommodated in the shell; the shell is made of a material which can be melted by high-temperature substances which are punched out after the battery safety valve is exploded.
Further, according to the end panel of the present invention, the fire extinguishing material comprises one or more of an aerosol fire extinguishing agent, hexafluoropropane, heptafluoropropane, perfluorohexane, perfluorohexanone, perfluoropolyether, halon, carbon dioxide, ammonium perfluorooctanoate, ethoxypentafluorocyclotriphosphazene, hexafluoropropylene trimer, trifluoroethyl phosphate, perfluorononene, or a hydrofluorocarbon; wherein the hydrofluorohydrocarbon compound comprises R134A, R125, R32, R407C, R410A, R152.
Further, according to the end plate of the present invention, the receiving hole has a triangular shape, a quadrangular shape, a slotted hole shape, or a circular hole shape.
Further, according to the end plate of the present invention, the fire extinguishing apparatus further includes a mounting plate integrally provided at one side of the housing, the mounting plate being provided with a mounting hole.
Further, according to the end plate disclosed by the utility model, the end plate is provided with a hollow part along the plate body direction, the hollow part comprises the accommodating hole, and the end surface of the end plate facing outwards is provided with a fixing hole corresponding to the mounting hole; when the fire extinguishing apparatus is disposed on the end plate, the housing is inserted into the receiving hole, and is connected with the mounting hole through the fixing hole using rivets or snap fasteners or bolts, so that the fire extinguishing apparatus is fixed on the end plate.
Further, according to the end plate of the utility model, the hollow part further comprises hollow holes arranged at two sides of the accommodating hole, and clamping grooves are arranged on the top surfaces of the accommodating hole and the hole wall between the two hollow holes; when the fire extinguishing apparatus is arranged on the end plate, the housing is inserted into the accommodating hole, and the mounting plate is clamped into the clamping groove.
Further, according to the end plate of the present invention, the accommodation hole is provided on an outward end surface of the end plate, the end surface is provided with fixing holes corresponding to the mounting holes at both sides of the accommodation hole, and insert nuts are provided in the fixing holes; when the fire extinguishing apparatus is disposed on the end plate, the housing is inserted into the accommodation hole, and bolts are used to pass through the installation holes and connect with the fixing holes, so that the fire extinguishing apparatus is fixed on the end plate.
Further, according to the end plate of the utility model, the fire extinguishing apparatus further comprises a temperature sensing wire, one end of the temperature sensing wire is arranged on the shell and connected with a medicament bag arranged in the fire extinguishing apparatus.
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 comprises side plates and end plates as described above; 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.
Further, according to the battery module, the opening pressure of the battery safety valve is set to be 0.02-1.00 MPa.
The utility model has the following technical effects: the utility model reduces/prevents the possibility of thermal runaway of the battery by arranging the fire extinguishing device on the end plate.
Drawings
Fig. 1 is a structural view of a battery module according to the present invention.
Fig. 2 is an exploded view illustrating the structure of a battery module according to the present invention.
Fig. 3 is a structural view of an end plate in the first embodiment of the present invention.
Fig. 4 is an exploded view of an end plate according to an embodiment of the present invention.
Fig. 5 is an enlarged view of a structure of a dotted line portion in fig. 4.
Fig. 6 is an exploded view of the end plate according to the second embodiment of the present invention.
Wherein,
1 is a module frame, 11 is a side plate, 12 is an end plate, 121 is an accommodating hole, 122 is an end face, 1221 is a fixing hole, and 123 is a hollow hole;
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 fire extinguishing device, 51 is a shell, 52 is a mounting plate, 521 is a mounting hole, and 53 is a temperature sensing line;
6 is the bolt, 7 is the rivet, 8 is the insert nut, 9 is the pore wall, 91 is the top surface, 911 is the draw-in groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, 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 includes side plates 11 and end plates 12; the end plate 12 is an end plate for a battery module according to the present invention. The end plate 12 is a plate body with a certain thickness, at least one accommodating hole 121 is formed in the end plate 12, and the fire extinguishing device 5 is arranged in the accommodating hole 121; the receiving hole 121 may have a triangular shape, a quadrangular shape, a slotted hole, a circular hole, or other shapes. The fire extinguishing device 5 may be fixed to the end plate 12 by means of bolts, glue, welding, riveting or the like. The fire extinguishing device 5 includes a housing 51 having a contour accommodating hole 121, a mounting plate 52, and a temperature sensing wire 53. The shell 51 contains fire extinguishing materials, the mounting plates 52 are integrally arranged at two sides of the shell 51, and the mounting plates 52 are provided with mounting holes 521; one end of the temperature sensing wire 53 is provided on the housing 51. Specifically, the module frame 1 includes two side plates 11 and two end plates 12; two end plates 12 set up respectively at the both ends of battery 2 array orientation, and two blocks of curb plates 11 set up respectively in the both sides of battery 2 array orientation, and the both ends of curb plate 11 are connected with two blocks of end plates 12 respectively, through curb plate 11 and 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. The temperature sensing wire 53 of the fire extinguishing device 5 on the end plate 12 is positioned on the top of the battery 2 and opposite to the battery safety valve 21, and those skilled in the art understand that the temperature sensing wire 53 can also be positioned between the harness isolation plate 3 and the module upper cover 4 and above the battery safety valve 21 through the fire extinguishing hole 31.
In this embodiment, the case 51 is made of a material that can be melted by a high-temperature substance that is pushed out after the battery safety valve 21 bursts. When the battery safety valve 21 of the battery 2 bursts, the rushed high-temperature substance can locally melt the case 51, so that the fire extinguishing material sealed inside the case 51 releases the fire extinguishing. More specifically, the material for the housing 51 is preferably made of a low-melting-point alloy or a plastic having flame retardant properties. By low melting point alloy is meant an alloy having a melting point temperature not exceeding 300 degrees c. Plastics with flame retardant properties such as PC or ABS.
In this embodiment, the temperature sensing wire 53 is a single ignition wire. One end of the temperature-sensitive wire 53 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 53 to be ignited. The temperature sensing line 53 is connected to a chemical pack provided in the fire extinguishing apparatus 5. When the temperature sensing wire 53 is ignited, the agent in the agent pack provided in the fire extinguishing device 5 can be ignited, and the agent in the agent pack is ignited to burst the case 51, so that the fire extinguishing material sealed in the case 51 is released to extinguish the fire.
Specifically, the fire extinguishing apparatus 5 of the present embodiment employs a dual trigger to trigger fire extinguishing. Those skilled in the art will appreciate that the fire extinguishing device 5 of the present embodiment may alternatively be implemented. For example, the fire extinguishing device 5 may be provided without the temperature sensing wire 53, or the housing 51 may be made of a low melting point alloy.
In addition, the shell 51 may be further provided with an injection port, fire extinguishing material is injected into the shell 51 through the injection port, and the injection port is sealed after the fire extinguishing material in the shell 51 is completely injected; using sealing nails or sealing beads; the sealing can be performed by welding, bonding, interference insertion and the like. In the embodiment, a sealing nail with a taper and an interference size of 0.02-1.00 mm is preferably adopted, after the surface of the sealing nail is coated with a sealant, the sealing nail is strongly plugged into the injection hole, and then the sealing nail is reinforced and sealed by laser welding or argon arc welding, namely, the embodiment adopts a mode of combining interference plugging, bonding and welding. It will be appreciated by those skilled in the art that vent holes may also be provided in the housing 51 through which venting is performed during the pouring process to increase the rate of pouring the fire-extinguishing material; the hole is simultaneously sealed after the infusion is complete.
With the above structure, there are many fire extinguishing materials that can be selected. In particular, the fire extinguishing material is required to have flame retardant, heat insulation and fire extinguishing effects after being released. Such as either a coolant, or an electrolyte additive with a fire-retardant fire-extinguishing effect additive, or a fire-extinguishing agent. Specifically, such fire extinguishing materials include, but are not limited to, aerosol fire extinguishing agents, hexafluoropropane, heptafluoropropane, perfluorohexane, perfluorohexanone, perfluoropolyether, halon, carbon dioxide, ammonium perfluorooctanoate, ethoxypentafluorocyclotriphosphazene, hexafluoropropylene trimer, trifluoroethyl phosphate, perfluorononene, or hydrofluorocarbon compounds. Such fire extinguishing materials may be mixtures of one or more of the above compounds. Among them, the hydrofluorocarbon compounds include, but are not limited to, R134A, R125, R32, R407C, R410A, R152, and the like.
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 in the module frame 1 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 not repeated.
Example one
As shown in fig. 3 and 4, the end plate 12 is hollowed along the plate body direction, the hollowed portion includes an accommodating hole 121, and a fixing hole 1221 corresponding to the mounting hole 521 is disposed on the outward end surface 122 of the end plate 12; when the fire extinguishing device 5 is placed on the end plate 12, the housing 51 is inserted into the receiving hole 121, and is connected to the mounting hole 521 through the fixing hole 1221 using the rivet 7, so that the fire extinguishing device 5 is fixed to the end plate 12. The person skilled in the art understands that the rivet 7 may also be replaced by a snap or a bolt 6, preferably a snap. When the bolt 6 is used for fixing, the insert nut 8 can be installed on the fixing hole 1221, and the bolt 6 is connected with the insert nut 8, so that the fire extinguishing device 5 can be installed more firmly.
Further, as shown in fig. 5, the hollow part further includes hollow holes 123 disposed at two sides of the accommodating hole 121, and a clamping groove 911 is disposed on the top surface 91 of the hole wall 9 between the accommodating hole 121 and the two hollow holes 123; when extinguishing device 5 sets up on end plate 12, casing 51 inserts accommodation hole 121, and the draw-in groove 911 is gone into to mounting panel 52 card, carries out the primary importance to extinguishing device 5 through draw-in groove 911 to make things convenient for extinguishing device 5's installation, further improve the installation effectiveness. Those skilled in the art will appreciate that two receiving holes 121 may be provided in the end plate 12, and of course, the two receiving holes 121 may be provided in the end plate 12 symmetrically with respect to the center line of the end plate 12. Each accommodating hole 121 has a fire extinguishing device 5 mounted therein.
Example two
As shown in fig. 6, unlike the first embodiment, the receiving hole 121 is provided on the end surface 122 of the end plate 12 facing outward, the end surface 122 is provided with fixing holes 1221 corresponding to the mounting holes 521 on the mounting plate 52 on both sides of the receiving hole 121, and the insert nut 8 is provided in the fixing hole 1221; when the fire extinguishing device 5 is disposed on the end plate 12, the housing 51 is inserted into the receiving hole 121, and is coupled with the fixing hole 1221 through the mounting hole 521 using the bolt 6, so that the fire extinguishing device 5 is fixed on the end plate 12. The person skilled in the art understands that the bolt 6 can also be replaced by a rivet 7 or a snap; of course, the fire extinguishing device 5 may be fixed by other fixing methods such as glue or welding.
It is to be noted that in the above embodiment, the entire case 51 is made of a meltable material, whereby the high-temperature substance, which is flushed out after the battery safety valve 21 bursts, can melt the case 51 to release the fire extinguishing material enclosed in the case 51. Those skilled in the art will appreciate that the housing 51 may also be partially made of a meltable material. For example, a fusible window is provided in the housing 51. Wherein the meltable window is made of a meltable material. The metal housing of the other parts except the meltable window is made of a high melting point non-meltable material such as stainless steel. The fusible window faces the battery 2 when mounted. The fusible material is a high-temperature substance which is flushed out after the battery safety valve 21 is exploded and can melt the fusible material, and comprises a low-melting-point alloy and a non-metallic material with flame retardant property. The non-metallic material with flame retardant property comprises ABS, PC and other materials.
Claims (9)
1. An end plate for a battery module is a plate body with a certain thickness and is characterized in that at least one accommodating hole is formed in the end plate, and a fire extinguishing device is arranged in the accommodating hole; the fire extinguishing device includes a housing contoured to the receiving hole; fire extinguishing materials are accommodated in the shell; the housing is at least partially made of a meltable material so that a high-temperature substance flushed out after the battery safety valve bursts can melt the housing to release the fire extinguishing material.
2. The end plate for a battery module according to claim 1, wherein the receiving holes have a triangular shape, or a quadrangular shape, or a slotted hole, or a circular hole shape.
3. The end plate for a battery module according to claim 2, wherein the fire extinguishing apparatus further comprises mounting plates integrally provided at both sides of the case, the mounting plates being provided with mounting holes.
4. The end plate for a battery module according to claim 3, wherein the end plate is provided with a hollow along a plate body direction, the hollow comprises the accommodating hole, and a fixing hole corresponding to the mounting hole is formed in an outward end surface of the end plate; when the fire extinguishing apparatus is disposed on the end plate, the housing is inserted into the receiving hole, and is connected with the mounting hole through the fixing hole using a rivet or a snap or a bolt, so that the fire extinguishing apparatus is fixed on the end plate.
5. The end plate for a battery module according to claim 4, wherein the hollow further comprises hollow holes disposed at both sides of the receiving hole, a locking groove is disposed on the top surface of the hole wall between the receiving hole and the two hollow holes, and the mounting plate is locked into the locking groove.
6. The end plate for a battery module according to claim 3, wherein the receiving hole is provided on an end surface of the end plate facing outward, the end surface is provided with fixing holes corresponding to the mounting holes at both sides of the receiving hole, and insert nuts are provided in the fixing holes; when the fire extinguishing apparatus is disposed on the end plate, the housing is inserted into the accommodation hole, and bolts are used to pass through the installation holes and connect with the fixing holes, so that the fire extinguishing apparatus is fixed on the end plate.
7. The end plate for a battery module according to any one of claims 1 to 6, wherein the fire extinguishing means further comprises a temperature sensing wire having one end disposed on the case and connected to a chemical pack disposed in the fire extinguishing means.
8. 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 side panels and the end panels of claim 7; 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.
9. The battery module according to claim 8, wherein the opening pressure of the battery safety valve is set to 0.02 to 1.00 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121536731.XU CN215989025U (en) | 2021-07-07 | 2021-07-07 | End plate for battery module and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121536731.XU CN215989025U (en) | 2021-07-07 | 2021-07-07 | End plate for battery module and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215989025U true CN215989025U (en) | 2022-03-08 |
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ID=80516088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121536731.XU Active CN215989025U (en) | 2021-07-07 | 2021-07-07 | End plate for battery module and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215989025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023174659A1 (en) * | 2022-03-16 | 2023-09-21 | Bayerische Motoren Werke Aktiengesellschaft | Battery cell having a rupture membrane |
-
2021
- 2021-07-07 CN CN202121536731.XU patent/CN215989025U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023174659A1 (en) * | 2022-03-16 | 2023-09-21 | Bayerische Motoren Werke Aktiengesellschaft | Battery cell having a rupture membrane |
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| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee after: Jiangsu Zhengli New Energy Battery Technology Co.,Ltd. Country or region after: China Address before: 215500 No. 68, Xin'anjiang Road, Southeast street, Changshu, Suzhou, Jiangsu Patentee before: Jiangsu Zenergy Battery Technologies Co.,ltd Country or region before: China |
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