CN215527822U - Battery module - Google Patents
Battery module Download PDFInfo
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- CN215527822U CN215527822U CN202122161688.XU CN202122161688U CN215527822U CN 215527822 U CN215527822 U CN 215527822U CN 202122161688 U CN202122161688 U CN 202122161688U CN 215527822 U CN215527822 U CN 215527822U
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- explosion
- exhaust
- proof valve
- battery module
- temperature
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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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- Gas Exhaust Devices For Batteries (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to the technical field of battery modules and discloses a battery module. The battery module comprises a box body, a plurality of battery cells are arranged in the box body, a first explosion-proof valve is arranged at the top end of each battery cell, and the first explosion-proof valve is used for discharging gas generated by the battery cells; the gas exhaust pipeline is arranged at the top end of the battery cell along the length direction of the box body, the bottom end of the gas exhaust pipeline is provided with gas inlets, the gas inlets are communicated with the first explosion-proof valves, and the gas exhaust pipeline is used for exhausting gas exhausted by the first explosion-proof valves out of the box body; and the high-temperature-resistant insulating part is arranged between the battery cell and the exhaust pipeline, and the thickness of the part, corresponding to the first explosion-proof valve, of the high-temperature-resistant insulating part is thinner than that of the other part of the high-temperature-resistant insulating part. The beneficial effects are as follows: can realize directional exhaust function, make the security of whole battery module higher.
Description
Technical Field
The utility model relates to the technical field of battery modules, in particular to a battery module.
Background
When taking place thermal runaway, electric core in the battery module can produce a large amount of high temperature high-pressure gas, in order to avoid the high temperature and the pressure in the battery module, need in time discharge with the gaseous of electric core production.
At present, the battery module includes box, exhaust pipe and a plurality of electric core. The battery cell box comprises a box body, wherein the top end of each battery cell in the box body is provided with a first explosion-proof valve, the first explosion-proof valve is arranged opposite to the battery cells, the first explosion-proof valve is used for discharging gas generated by the battery cells, and an exhaust pipeline is arranged on the top end of each battery cell along the length direction of the box body. In addition, one end that is close to electric core on the blast pipe way sets up a plurality of inlet ports, and an inlet port is coaxial with an explosion-proof valve to make the gas that the electric core that became invalid produced pass through corresponding explosion-proof valve and with it coaxial inlet port get into the blast pipe way, thereby make the blast pipe way in time discharge box with the gas of explosion-proof valve combustion gas.
Therefore, when gas generated by the failed battery cell enters the exhaust pipeline through the corresponding first explosion-proof valve and the air inlet hole coaxial with the first explosion-proof valve, the gas in the exhaust pipeline is easy to overflow and scatter to other air inlet holes due to the fact that the plurality of air inlet holes are formed in the exhaust pipeline, and then enters the corresponding first explosion-proof valve through other air inlet holes to enter and influence other battery cells which are not failed. Therefore, the technical scheme can not realize the directional exhaust function of the battery module and can not ensure the normal use of other battery cores, so that the safety is lower.
Therefore, a battery module capable of solving the above problems is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a battery module, which can realize a directional exhaust function and ensure that the safety of the whole battery module is higher.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a battery module, comprising:
the battery comprises a box body, a plurality of battery cores and a first explosion-proof valve, wherein the box body is internally provided with the battery cores, the top end of each battery core is provided with the first explosion-proof valve, and the first explosion-proof valve is used for exhausting gas generated by the battery cores;
the gas exhaust pipeline is arranged at the top end of the battery cell along the length direction of the box body, the bottom end of the gas exhaust pipeline is provided with gas inlets, the gas inlets are communicated with the first explosion-proof valves, and the gas exhaust pipeline is used for exhausting gas exhausted by the first explosion-proof valves out of the box body; and
and the high-temperature-resistant insulating part is arranged between the battery cell and the exhaust pipeline, and the thickness of the part, corresponding to the first explosion-proof valve, of the high-temperature-resistant insulating part is thinner than that of other parts of the high-temperature-resistant insulating part.
Further, the box body further comprises a side frame, a second explosion-proof valve is arranged on the side frame, an exhaust channel is formed on the inner side of the side frame, one end of the exhaust channel is communicated with the exhaust pipeline, and the other end of the exhaust channel is communicated with the second explosion-proof valve.
Further, the exhaust port of the exhaust pipeline and the air outlet of the second explosion-proof valve are arranged in an offset mode.
Furthermore, a first sealing element is arranged between the bottom end of the high-temperature-resistant insulating part and the top end of the battery core, and air passing holes in one-to-one correspondence with the first explosion-proof valves are formed in the first sealing element.
Further, the box includes the lamina tecti, the lamina tecti is located between high temperature resistant insulating part and the exhaust pipe, just be provided with the second sealing member between the top of lamina tecti and the bottom of exhaust pipe, the lamina tecti with all be formed with on the second sealing member with air inlet assorted air passing mouth.
Further, the number of the exhaust pipelines, the exhaust channel and the second explosion-proof valve is provided with a plurality of the second explosion-proof valves.
Furthermore, the high-temperature-resistant insulating part is made of foam or a material capable of resisting temperature of more than or equal to 200 ℃.
Further, the exhaust pipeline is fixed on the top cover plate through a fastener.
Further, the fastener is fixing bolt and with fixing bolt assorted rivet pressing nut.
Further, the high-temperature-resistant insulating part is fixedly arranged at the top end of the battery cell through a hot riveting column.
The utility model has the beneficial effects that:
the top end of each electric core in the box body is provided with a first explosion-proof valve for discharging gas generated by the electric core, the exhaust pipeline is arranged at the top end of the electric core along the length direction of the box body, the bottom end of the exhaust pipeline is provided with air inlets which are communicated with the first explosion-proof valves, and a high-temperature-resistant insulating part is arranged between the electric core and the exhaust pipeline; after the gas generated by the failure of one of the battery cells passes through the first explosion-proof valve, because the thickness of the part, corresponding to the first explosion-proof valve, on the high-temperature-resistant insulating part is thinner than the thickness of the other parts on the high-temperature-resistant insulating part, the gas in the first explosion-proof valve can burst the part, corresponding to the first explosion-proof valve, on the high-temperature-resistant insulating part to enter the exhaust pipeline, so that the gas exhausted by the first explosion-proof valve is exhausted out of the box body by the exhaust pipeline in time, the temperature and the pressure in the battery module can be kept balanced, and the safety of the battery module is ensured; because the gas in the first explosion-proof valve can only break through the part of the high-temperature-resistant insulating part corresponding to the first explosion-proof valve, other positions of the high-temperature-resistant insulating part cannot be broken, namely, other gas circulation channels between the battery cell and the exhaust pipeline are blocked, the problems that in the prior art, due to the fact that a plurality of air inlets are formed in the exhaust pipeline, the gas in the exhaust pipeline is easy to overflow to other air inlets and then enters the corresponding first explosion-proof valve through other air inlets, so that other battery cells which do not fail are influenced can be solved, the directional exhaust function of the battery module can be realized, and the safety of the battery module is higher.
Drawings
Fig. 1 is a partially exploded view illustrating a battery module according to the present invention;
fig. 2 is a schematic structural diagram of a battery module provided by the present invention.
Reference numerals:
1-a box body; 2-electric core; 3-high temperature resistant insulation; 4-a first seal; 5-top cover plate; 6-a second seal; 7-a second explosion-proof valve; 8-hot riveting columns; 9-a fastener; 10-an exhaust line; 11-side frame; 12-first explosion-proof valve.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the structures or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
At present, the battery module includes box, exhaust pipe and a plurality of electric core. The battery cell box comprises a box body, wherein the top end of each battery cell in the box body is provided with a first explosion-proof valve, the first explosion-proof valve is arranged opposite to the battery cells, the first explosion-proof valve is used for discharging gas generated by the battery cells, and an exhaust pipeline is arranged on the top end of each battery cell along the length direction of the box body. In addition, one end that is close to electric core on the blast pipe way sets up a plurality of inlet ports, and an inlet port is coaxial with an explosion-proof valve to make the gas that the electric core that became invalid produced pass through corresponding explosion-proof valve and with it coaxial inlet port get into the blast pipe way, thereby make the blast pipe way in time discharge box with the gas of explosion-proof valve combustion gas. However, when the gas generated by the failed battery cell enters the exhaust pipeline through the corresponding first explosion-proof valve and the air inlet coaxial with the first explosion-proof valve, the gas in the exhaust pipeline is easily overflowed to other air inlet holes due to the plurality of air inlets arranged on the exhaust pipeline, and then enters the corresponding first explosion-proof valve through other air inlets to enter and affect other battery cells which are not failed. Therefore, the prior art can not realize the directional exhaust function of the battery module, and can not ensure the normal use of other battery cores, so that the safety is low.
In view of the above, an embodiment of the present disclosure provides a battery module. Specifically, as shown in fig. 1 and 2, the battery module includes a case 1 and an exhaust duct 10. Be provided with a plurality of electric cores 2 in box 1, and all be provided with first explosion-proof valve 12 on the top of every electric core 2, first explosion-proof valve 12 is just to setting up with electric core 2, and first explosion-proof valve 12 is used for discharging the high temperature high-pressure gas that electric core 2 became invalid and produce. Exhaust pipe 10 sets up on the top of electric core 2 along the length direction of box 1, is formed with the air inlet in exhaust pipe 10's bottom, and the air inlet all communicates with each first explosion-proof valve 12, and exhaust pipe 10 is used for the gas discharge box 1 of first explosion-proof valve 12 combustion gas. The battery module further comprises a high-temperature-resistant insulating part 3, the high-temperature-resistant insulating part 3 is arranged between the battery core 2 and the exhaust pipeline 10, and the thickness of the part, corresponding to the first explosion-proof valve 12, of the high-temperature-resistant insulating part 3 is thinner than the thickness of the other parts of the high-temperature-resistant insulating part 3.
For the battery module in this embodiment, high temperature resistant insulating part 3 has been increased between electricity core 2 and exhaust pipe 10 for prior art to adjust high temperature resistant insulating part 3's thickness. In this way, after any one of the cells 2 fails to generate gas, the thickness of the portion of the high-temperature-resistant insulating member 3 corresponding to the first explosion-proof valve 12 is thinner than the thickness of the other portions of the high-temperature-resistant insulating member 3, and the gas in the first explosion-proof valve 12 can burst the portion of the high-temperature-resistant insulating member 3 corresponding to the first explosion-proof valve 12 to enter the exhaust pipeline 10, so that the exhaust pipeline 10 can exhaust the gas exhausted from the first explosion-proof valve 12 out of the box body 1 in time, and the temperature and the pressure in the battery module can be kept balanced to ensure the safety of the battery module.
The thickness of the part of the high-temperature-resistant insulating member 3 corresponding to the first explosion-proof valve 12 is thinner than the thickness of the other parts of the high-temperature-resistant insulating member 3, so that the gas in the first explosion-proof valve 12 can only burst the part of the high-temperature-resistant insulating member 3 corresponding to the first explosion-proof valve 12, and cannot burst other positions of the high-temperature-resistant insulating member 3, thereby blocking other gas circulation channels between the battery cell 2 and the exhaust pipeline 10. In this way, the problem that in the prior art, due to the fact that the exhaust pipeline 10 is provided with the plurality of air inlets, air in the exhaust pipeline 10 is easy to overflow to other air inlets and then enters the corresponding first explosion-proof valve 12 through other air inlets so as to enter and influence other cells 2 which do not fail can be avoided, so that the directional exhaust function of the battery module can be realized, and the safety of the battery module is high.
In this embodiment, the high temperature insulating member 3 is made of foam or a material that can withstand a temperature of not less than 200 ℃. In this embodiment, the high temperature insulating member 3 is made of mica, and the mica has a good high temperature insulating property. In other embodiments, the high-temperature-resistant insulating member 3 may be made of foam or other materials capable of resisting temperature higher than or equal to 200 ℃.
Further, as shown in fig. 1, a first sealing member 4 is arranged between the bottom end of the high-temperature-resistant insulating member 3 and the top end of the battery core 2, so as to ensure the sealing effect and ensure the directional exhaust function of the battery module. And the first sealing element 4 is provided with air passing holes corresponding to the first explosion-proof valves 12 one by one, so that the gas in the first explosion-proof valves 12 can be smoothly discharged to the high-temperature-resistant insulating element 3 through the air passing holes. Wherein, high temperature resistant insulating part 3 passes through the fixed top that sets up at electric core 2 of hot riveting post 8. In this embodiment, the first seal member 4 is a gasket.
Specifically, as shown in fig. 1, the case 1 includes a top cover plate 5, and the top cover plate 5 is located between the high temperature resistant insulator 3 and the exhaust duct 10 so that the top cover plate 5 can be used to support and fix the exhaust duct 10. In addition, be provided with second sealing member 6 between the top of lamina tecti 5 and the bottom of exhaust pipe 10 to guarantee sealed effect, avoid high temperature high pressure gas to leak, thereby guarantee the directional exhaust function of battery module. In addition, air vents matched with the air inlets are formed in the top cover plate 5 and the second sealing element 6, so that the air which breaks through the high-temperature-resistant insulating element 3 can be smoothly exhausted into the exhaust pipeline 10 through the air vents. In this embodiment, the second seal member 6 is a gasket.
As shown in fig. 1, the exhaust duct 10 is fixed to the top cover plate 5 by a fastener 9. In this embodiment, the fastening member 9 is a fixing bolt and a press-riveting nut matched with the fixing bolt. In other embodiments, other types of fasteners 9 may be used to secure the exhaust line 10.
Further, as shown in fig. 2, the box body 1 further includes a side frame 11 located at a side of the box body 1, a second explosion-proof valve 7 is disposed on the side frame 11, an exhaust channel is formed inside the side frame 11, one end of the exhaust channel is communicated with the exhaust pipeline 10, and the other end of the exhaust channel is communicated with the second explosion-proof valve 7. In this way, the gas in the exhaust pipeline 10 is directly discharged to the second explosion-proof valve 7 through the exhaust passage to discharge to the box 1 outside through the second explosion-proof valve 7, whole exhaust process can not influence the performance of other electricity core 2, so that the exhaust security is higher, thereby makes the security of battery module higher.
Specifically, the exhaust port of the exhaust pipeline 10 and the gas outlet of the second explosion-proof valve 7 are arranged in an offset manner, that is, the distance between the gas from the exhaust port of the exhaust pipeline 10 and the gas outlet of the second explosion-proof valve 7 is prolonged, so that the flow resistance of the gas is increased, and more time can be provided to facilitate the temperature reduction of the gas in the transportation process. In this way, the exhaust port of the exhaust pipeline 10 and the gas outlet of the second explosion-proof valve 7 are arranged just opposite to each other, so that the high-temperature gas in the exhaust pipeline 10 is directly exhausted to the second explosion-proof valve 7 through the exhaust channel, and the spark is generated at the second explosion-proof valve 7, so that the safety of the battery module is high.
Particularly, the gas outlet that just is located second explosion-proof valve 7 at second explosion-proof valve 7 inboard is provided with the filter screen to filter by the particulate matter in the exhaust gas channel in the exhaust, thereby can avoid the particulate matter in the higher gas of temperature to take place the burning and produce the phenomenon of spouting a fire in the atmosphere better, further make battery module's security higher. Meanwhile, the problem that the environment is polluted by directly discharging particles in the gas to the atmosphere can be avoided, and the method is environment-friendly. In this embodiment, the filter screen is a metal filter screen. The metal filter screen has the characteristics of low resistance, repeated cleaning, extremely high economical efficiency, high acid-base resistance, safety, firmness and long service life.
In some embodiments, the number of the exhaust pipes 10, the exhaust channels and the second explosion-proof valve 7 is plural, and one exhaust pipe 10 is disposed corresponding to one exhaust channel, so that the gas in one exhaust pipe 10 can only be transmitted to the second explosion-proof valve 7 through a single flowing space, and thus other cells 2 are not affected. In this embodiment, the number of the exhaust pipes 10, the number of the exhaust passages, and the number of the second explosion-proof valves 7 are four, and three, respectively. In other embodiments, the number of the exhaust lines 10, the exhaust passages, and the second explosion-proof valves 7 may be set to other numbers. The number of the specific exhaust pipelines 10, the exhaust channels and the second explosion-proof valves 7 is determined according to specific working conditions.
The specific exhaust process when the battery module in this embodiment is in failure is as follows:
when any one of the battery cells 2 has a failure condition: firstly, high-temperature and high-pressure gas generated by the failed battery cell 2 passes through the first explosion-proof valve 12, and the gas in the first explosion-proof valve 12 breaks through a part of the high-temperature-resistant insulating member 3, which is arranged corresponding to the first explosion-proof valve 12, and enters the exhaust pipeline 10 through a gas inlet of the exhaust pipeline 10.
Then, the gas in the exhaust pipeline 10 enters an exhaust channel arranged corresponding to the exhaust pipeline 10, and then enters the second explosion-proof valve 7 through the exhaust channel; and finally, the gas is discharged through the second explosion-proof valve 7, so that the high-temperature and high-pressure gas is discharged out of the battery module, and the safety of the battery module is ensured.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. A battery module, comprising:
the battery cell structure comprises a box body (1), wherein a plurality of battery cells (2) are arranged in the box body, a first explosion-proof valve (12) is arranged at the top end of each battery cell (2), and the first explosion-proof valve (12) is used for discharging gas generated by the battery cells (2);
the exhaust pipeline (10) is arranged at the top end of the battery cell (2) along the length direction of the box body (1), air inlets are formed at the bottom end of the exhaust pipeline (10), the air inlets are communicated with the first explosion-proof valves (12), and the exhaust pipeline (10) is used for exhausting gas exhausted by the first explosion-proof valves (12) out of the box body (1); and
and the high-temperature-resistant insulating piece (3) is arranged between the battery cell (2) and the exhaust pipeline (10), and the thickness of the part, corresponding to the first explosion-proof valve (12), of the high-temperature-resistant insulating piece (3) is thinner than that of the other part of the high-temperature-resistant insulating piece (3).
2. The battery module according to claim 1, wherein the case (1) further comprises a side frame (11), a second explosion-proof valve (7) is disposed on the side frame (11), and an exhaust passage is formed inside the side frame (11), and one end of the exhaust passage is communicated with the exhaust pipe (10) and the other end is communicated with the second explosion-proof valve (7).
3. The battery module according to claim 2, wherein the exhaust port of the exhaust duct (10) is disposed offset from the exhaust port of the second explosion-proof valve (7).
4. The battery module according to claim 1, wherein a first sealing member (4) is arranged between the bottom end of the high-temperature-resistant insulating member (3) and the top end of the battery core (2), and the first sealing member (4) is provided with air passing holes corresponding to the first explosion-proof valves (12) in a one-to-one manner.
5. The battery module according to claim 1, wherein the case (1) comprises a top cover plate (5), the top cover plate (5) is located between the high temperature resistant insulator (3) and the exhaust duct (10), a second sealing member (6) is arranged between the top end of the top cover plate (5) and the bottom end of the exhaust duct (10), and a vent matched with the air inlet is formed on each of the top cover plate (5) and the second sealing member (6).
6. The battery module according to claim 2, wherein the number of the exhaust duct (10), the exhaust passage and the second explosion-proof valve (7) is plural.
7. The battery module according to claim 1, wherein the high-temperature-resistant insulating member (3) is made of foam or a material capable of resisting temperature of more than or equal to 200 ℃.
8. The battery module according to claim 5, wherein the exhaust duct (10) is fixed to the top cover plate (5) by a fastener (9).
9. The battery module according to claim 8, wherein the fastening member (9) is a fixing bolt and a clinch nut matched with the fixing bolt.
10. The battery module according to claim 1, wherein the high-temperature-resistant insulating member (3) is fixedly arranged at the top end of the battery core (2) through a hot riveting column (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122161688.XU CN215527822U (en) | 2021-09-08 | 2021-09-08 | Battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122161688.XU CN215527822U (en) | 2021-09-08 | 2021-09-08 | Battery module |
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| Publication Number | Publication Date |
|---|---|
| CN215527822U true CN215527822U (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122161688.XU Active CN215527822U (en) | 2021-09-08 | 2021-09-08 | Battery module |
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| CN (1) | CN215527822U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024001771A1 (en) * | 2022-06-30 | 2024-01-04 | 北京卫蓝新能源科技有限公司 | Battery and battery case |
| WO2024103729A1 (en) * | 2022-11-16 | 2024-05-23 | 华为数字能源技术有限公司 | Battery module, energy storage cabinet, and energy storage system |
-
2021
- 2021-09-08 CN CN202122161688.XU patent/CN215527822U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024001771A1 (en) * | 2022-06-30 | 2024-01-04 | 北京卫蓝新能源科技有限公司 | Battery and battery case |
| WO2024103729A1 (en) * | 2022-11-16 | 2024-05-23 | 华为数字能源技术有限公司 | Battery module, energy storage cabinet, and energy storage system |
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