CN219610653U - Battery case lid, battery module and energy storage system - Google Patents
Battery case lid, battery module and energy storage system Download PDFInfo
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- CN219610653U CN219610653U CN202320271097.4U CN202320271097U CN219610653U CN 219610653 U CN219610653 U CN 219610653U CN 202320271097 U CN202320271097 U CN 202320271097U CN 219610653 U CN219610653 U CN 219610653U
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- battery
- cover
- gas
- manifold
- explosion
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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 discloses a battery box cover, a battery module and an energy storage system, and belongs to the technical field of battery manufacturing. The battery case cover includes: a cover body; the gas-guide tube and the gas-guide tubes are arranged on the cover body, the gas-guide tubes are communicated with the gas-guide tube, and the gas-guide tubes are distributed at intervals and are suitable for being arranged opposite to the explosion-proof valve of the battery; and the pressure sensor is arranged on the collecting pipe. According to the battery box cover, the explosion-proof valves of a plurality of batteries can be monitored through the gas guide pipe and the collecting pipe for guiding leakage gas of the batteries, potential safety hazards in the battery module can be responded timely and rapidly, and the cost is low.
Description
Technical Field
The utility model belongs to the technical field of battery manufacturing, and particularly relates to a battery box cover, a battery module and an energy storage system.
Background
Batteries are widely used in the fields of consumer electronics, power automobiles, energy storage power stations and the like. During use of the battery, there is a risk of failure. In energy storage system, for example in container energy storage system, can install the smoke transducer in the container for whether the battery of every battery module in the monitoring container takes place to leak, when the battery became invalid, from explosion-proof valve blowout combustible gas or smog, the sensor catches flue gas concentration and alarm, starts container exhaust system and takes a breath, slows down the diffusion of battery safety failure.
The fire protection measures belong to passive safety protection, and although the safety risk can be effectively reduced, the fire protection measures have the following defects: firstly, the explosion-proof valve of the battery monomer is not accurately monitored when being opened, the smoke concentration is monitored by the smoke probe without responding to the opening of the explosion-proof valve, and the flash point of the organic vapor of the electrolyte is low, and the electrolyte is inflammable and explosive, so that great potential safety hazards exist after the explosion-proof valve of the battery is opened; secondly, the smoke concentration monitoring is inaccurate and the response is lagged, and most of smoke generated after the safety failure of a general battery is firstly remained in the battery module, and then gradually diffused to the vicinity of the sensor, and when the sensor captures the smoke, the thermal runaway of the basic battery is uncontrollable, so that the fire-fighting response has great lagging.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery box cover, the battery module and the energy storage system, which can respond to potential safety hazards in the battery module timely and quickly.
In a first aspect, the present utility model provides a battery case cover comprising:
a cover body;
the gas-guide tube and the gas-guide tubes are arranged on the cover body, the gas-guide tubes are communicated with the gas-guide tube, and the gas-guide tubes are distributed at intervals and are suitable for being arranged opposite to the explosion-proof valve of the battery;
and the pressure sensor is arranged on the collecting pipe.
According to the battery box cover, the explosion-proof valves of a plurality of batteries can be monitored by designing the air duct and the collecting pipe for guiding the leakage gas of the batteries, potential safety hazards in the battery module can be responded timely and rapidly, and the cost is low.
According to one embodiment of the utility model, the collecting pipe is a straight pipe and extends along the arrangement direction of the batteries, and the plurality of air ducts are distributed at intervals along the extending direction of the collecting pipe.
According to one embodiment of the utility model, the flow cross-sectional area of the collecting pipe is S, which satisfies the following conditions: 28mm of 2 ≤S≤320mm 2 。
According to one embodiment of the utility model, the collecting pipe is integrated in the cover body, and the air duct is connected with the inner wall of the cover body.
According to one embodiment of the utility model, the cover, the manifold and the airway are integrally formed plastic pieces.
According to one embodiment of the utility model, the battery box cover comprises a top plate and a side plate connected with the top plate, the collecting pipe is integrated in the top plate, the side plate is provided with a mounting hole communicated with the collecting pipe, and the sensing part of the pressure sensor is mounted in the mounting hole.
According to one embodiment of the utility model, the battery box cover comprises a top plate and a side plate connected with the top plate, the collecting pipe is integrated in the top plate, and the air duct is connected with the inner wall of the top plate.
According to one embodiment of the utility model, the side plate is provided with a mounting hole communicating to the manifold, and the sensing part of the pressure sensor is mounted to the mounting hole.
In a second aspect, the present utility model provides a battery module including:
a battery case;
a battery case cover as described in any one of the above;
the batteries are placed in the battery box body, and explosion-proof valves of the batteries are opposite to the air ducts in a one-to-one correspondence manner;
and the battery management system is electrically connected with the pressure sensor.
According to the battery module, the explosion-proof valves of a plurality of batteries can be monitored by designing the air duct and the collecting pipe for guiding the leakage gas of the batteries, potential safety hazards in the battery module can be responded timely and rapidly, and the cost is low.
According to one embodiment of the utility model, the projection of the gas duct onto the cover plate of the battery covers the explosion-proof valve.
According to one embodiment of the utility model, the cover plate of the battery is provided with a groove surrounding the explosion-proof valve, and the end of the air duct extends into the groove.
In a third aspect, the present utility model provides an energy storage system comprising: the battery module according to any one of the above.
According to the energy storage system provided by the embodiment of the utility model, by adopting the battery module with the structural form, the explosion-proof valves of a plurality of batteries can be monitored, the potential safety hazards in the battery module can be responded timely and rapidly, and the cost is low.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of a battery case cover according to an embodiment of the present utility model;
fig. 2 is a top view of a battery module according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
FIG. 4 is a cross-sectional view at B-B in FIG. 2;
FIG. 5 is an enlarged view of a portion of FIG. 4 at C;
fig. 6 is a partial sectional view of a battery module according to an embodiment of the present utility model;
fig. 7 is an isometric view of a battery module according to an embodiment of the present utility model;
fig. 8 is a schematic structural diagram of an energy storage system according to an embodiment of the present utility model.
Reference numerals:
an energy storage system 10, a battery module 100;
battery case cover 110, cover 111, manifold 112, air duct 113, pressure sensor 114;
a battery case 120;
battery 130, explosion-proof valve 131, cover 132, groove 133;
battery management system 140.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
A battery case cover 110 according to an embodiment of the present utility model is described below with reference to fig. 1 to 8.
As shown in fig. 1, a battery case cover 110 of an embodiment of the present utility model includes: a cover 111, a manifold 112, a plurality of air ducts 113, and a pressure sensor 114.
The cover 111 is configured to cooperate with the battery case 120 to define a battery installation space. The cover 111 may be made of plastic or metal, and the inner wall of the cover 111 may be provided with a fireproof pad.
The plurality of air ducts 113 are communicated with the collecting pipe 112, the plurality of air ducts 113 are distributed at intervals, and the plurality of air ducts 113 are suitable for being arranged opposite to the explosion-proof valve 131 of the battery 130.
As shown in fig. 3, the row is provided with 6 cells 130, and correspondingly, 6 gas-guide tubes 113 are arranged opposite to the explosion-proof valves 131 of the 6 cells 130 in a one-to-one correspondence, when the internal pressure of one cell 130 is too high, the explosion-proof valve 131 of the cell 130 is opened, and high-pressure gas flows into the corresponding gas-guide tube 113 and flows into the collecting tube 112.
As shown in fig. 2, the battery module 100 is provided with two rows of batteries 130, and correspondingly, the battery case cover 110 is provided with two collecting pipes 112, and each collecting pipe 112 is connected with a plurality of air ducts 113.
At least one of the air duct 113 and the manifold 112 is connected to the cover 111, and at least one of the air duct 113 and the manifold 112 is disposed on the cover 111.
Such as the gas-guide tube 113 and the manifold 112 are fixed to the side of the cover 111 near the battery, or at least one of the gas-guide tube 113 and the manifold 112 is formed integrally with the cover 111. For example, the manifold 112 may be connected to the cover 111 by a tie or adhesive, or the manifold 112 may be integrally formed with the cover 111, and the manifold 112 may be an integrally formed cavity within the cover 111. The air duct 113 may be connected to the cover 111 by a band or adhesive, or the air duct 113 may be formed integrally with the cover 111.
Pressure sensor 114 is mounted to manifold 112.
When the internal pressure of one of the batteries 130 is too high, the explosion-proof valve 131 of the battery 130 is opened, high-pressure air is injected into the corresponding air duct 113 and flows into the collecting pipe 112, the pressure sensor 114 detects the sudden increase of the air pressure of the collecting pipe 112 and transmits the information outwards, so that the potential safety hazard can be monitored when the explosion-proof valve 131 of the battery 130 is opened, and electrolyte steam is not dissipated out of the battery module 100.
In the related art, some structures are designed for monitoring the opening of the battery explosion-proof valves, but a sensor is required to be installed on each explosion-proof valve, in other words, the battery structure is required to be modified, and the cost is high; in the present utility model, one pressure sensor 114 can monitor the explosion-proof valves 131 of a plurality of batteries 130, and the above structures are all on the battery case cover 110, so that the battery 130 and other structures in the battery module 100 do not need to be redesigned basically, and the modification cost is low.
In addition, in the related art, a pressure sensor is also designed on the battery module shell, and when the explosion-proof valve of the single battery is opened in the structural form, the whole battery module shell is filled with gas, so that the detection value of the pressure sensor is smaller, the detection sensitivity is low, the safety risk is high, and the pressure sensor with high precision is needed to be selected and used on the other hand, and the cost is high; in the present utility model, the high pressure gas is introduced into the small-volume manifold 112, so that the response can be made faster.
The gas and the metal sheet ejected from the explosion-proof valve 131 can flow into the gas guide tube 113 and the collecting tube 112 without contaminating other batteries 130 and other electric devices in the battery module 100.
According to the battery case cover 110 provided by the embodiment of the utility model, the explosion-proof valves 131 of a plurality of batteries 130 can be monitored by designing the gas guide tube 113 and the collecting tube 112 for guiding the leakage gas of the batteries 130, so that potential safety hazards in the battery module 100 can be responded quickly in time, and the cost is low.
In some embodiments, as shown in fig. 1 and 4, the manifold 112 is a straight pipe, and the manifold 112 extends along the arrangement direction of the cells 130, and the plurality of gas-guide tubes 113 are spaced apart along the extension direction of the manifold 112.
In this way, the high pressure gas is introduced from the gas duct 113 into the manifold 112 with little loss in gas pressure, which can help the pressure sensor 114 respond effectively.
In some embodiments, the cross-sectional flow area of the manifold 112 is S, satisfying: 28mm of 2 ≤S≤320mm 2 . For example, the manifold 112 is a cylindrical tube, and the inside diameter of the manifold 112 is 5mm. In this way, the volume of the manifold 112 is small, and when a slight leak occurs in the single cell 130, the pressure within the manifold 112 changes significantly and can be sensed by the pressure sensor 114.
In some embodiments, as shown in fig. 1 and 7, a manifold 112 is integrated within the cover 111, and an air duct 113 is connected to the inner wall of the cover 111. The manifold 112 may be an integrally formed cavity within the cover 111. Thus, the battery case cover 110 has no elongated tube, prevents the long bus duct 112 from being damaged, and does not occupy the space below the cover 111, thereby contributing to an improvement in the capacity of the battery module 100.
In some embodiments, as shown in fig. 1, cover 111, manifold 112, and airway 113 may be integrally formed as a plastic piece. In this way, the battery case cover 110 is easy to mold and easy to assemble, only the pressure sensor 114 is required to be mounted, and an additional alignment process is not required when the entire battery case cover 110 is mounted to the entire battery module 100.
In some embodiments, as shown in fig. 1 and 7, the battery case cover 110 includes a top plate and a side plate connected to the top plate, the manifold 112 is integrated in the top plate, and the gas guide 113 is connected to an inner wall of the top plate.
Thus, the battery case cover 110 has no elongated tube, prevents the long bus duct 112 from being damaged, and does not occupy the space below the cover 111, thereby contributing to an improvement in the capacity of the battery module 100.
As shown in fig. 1 and 3, the side plate is provided with a mounting hole communicating to the manifold 112, and the sensing portion of the pressure sensor 114 is mounted to the mounting hole. The pressure sensor 114 and the mounting hole may be an interference fit to ensure a seal thereat. The end of the manifold 112 facing away from the pressure sensor 114 may be sealed.
The projection of the air duct 113 on the cover plate 132 of the battery 130 covers the explosion-proof valve 131, so that a sealing element is not required to be added between the air duct 113 and the battery 130, the air duct 113 and the explosion-proof valve 131 can be sealed as much as possible, more air is guided into the air duct 113, and the assembly difficulty is low.
The shape of the air duct 113 may be the same as the shape of the explosion-proof valve 131, for example, the shape of the air duct 113 may be waist-shaped as the shape of the explosion-proof valve 131.
The manifold 112, the gas-guide tube 113, and the pressure sensor 114 may be divided into a plurality of groups, for example, the number of the groups may be the same as the number of rows of the cells 130 in the battery module 100, i.e., one row of the cells 130 is provided with a group of the manifold 112, the gas-guide tube 113, and the pressure sensor 114. The example shown in fig. 2 is two sets.
According to the utility model, the airflow channel and the pressure sensor 114 are introduced into the battery box cover 110, and the air pressure change at the opening of the explosion-proof valve 131 of each battery 130 is detected in real time, so that the aim of monitoring whether the explosion-proof valve 131 is opened or not is fulfilled, the safety pre-warning time can be prolonged, the aluminum sheet and electrolyte smoke flushed by the explosion-proof valve 131 are absorbed through the airflow channel, the influence on surrounding batteries 130 is avoided, the safety performance of the battery module 100 is effectively improved, and the safety risk is reduced.
The embodiment of the utility model also provides a battery module 100.
As shown in fig. 2 to 7, the battery module 100 includes: a battery case 120, a battery case cover 110, a plurality of batteries 130, and a battery management system 140.
The battery case 120 may have a box-like structure with an open upper end, and the battery case 120 may be made of metal or plastic.
The battery case cover 110 is the battery case cover 110 of any of the embodiments described above.
The batteries 130 are placed in the battery box 120, and the explosion-proof valves 131 of the batteries 130 are arranged opposite to the air ducts 113 in a one-to-one correspondence, and the battery management system 140 is electrically connected with the pressure sensor 114.
When the internal pressure of one of the batteries 130 is too high, the explosion-proof valve 131 of the battery 130 is opened, high-pressure air is injected into the corresponding air duct 113 and flows into the collecting pipe 112, the pressure sensor 114 detects the sudden increase of the air pressure of the collecting pipe 112 and transmits the information to the battery management system 140, so that the potential safety hazard can be monitored when the explosion-proof valve 131 of the battery 130 is opened, and the electrolyte steam does not escape out of the battery module 100. The battery management system 140 may control the battery 130 to stop charging and discharging and output an alarm message to prompt the timely replacement of a new battery 130.
According to the battery module 100 provided by the embodiment of the utility model, the explosion-proof valves 131 of a plurality of batteries 130 can be monitored by designing the gas guide tube 113 and the collecting tube 112 for guiding the leakage gas of the batteries 130, so that potential safety hazards in the battery module 100 can be responded quickly in time, and the cost is low.
In some embodiments, as shown in fig. 5 and 6, the projection of the air duct 113 onto the cover 132 of the battery 130 covers the explosion proof valve 131. In this way, without adding a sealing member between the air duct 113 and the battery 130, the air duct 113 and the explosion-proof valve 131 can be sealed as much as possible, more air is guided into the air duct 113, and the assembly difficulty is low.
The shape of the air duct 113 may be the same as the shape of the explosion-proof valve 131, for example, the shape of the air duct 113 may be waist-shaped as the shape of the explosion-proof valve 131.
In some embodiments, as shown in fig. 6, the cover 132 of the battery 130 is provided with a groove 133 surrounding the explosion-proof valve 131, and the end of the gas-guide tube 113 protrudes into the groove 133.
By arranging the assembly structure, on one hand, the dissipation of gas from the gap between the cover plate 132 and the air duct 113 can be reduced, and on the other hand, the accuracy requirements of processing and assembly, such as lower accuracy requirements of high processing of the air duct 113 and lower accuracy requirements of the assembly connection force of the battery box 120 and the battery box cover 110, can be reduced.
The embodiment of the utility model also provides an energy storage system 10.
As shown in fig. 8, the energy storage system 10 includes: a plurality of the battery modules 100 of any of the above embodiments.
According to the energy storage system 10 provided by the embodiment of the utility model, by adopting the battery module 100 with the structural form, the explosion-proof valves 131 of the plurality of batteries 130 can be monitored, potential safety hazards in the battery module 100 can be responded timely and rapidly, and the cost is low.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices 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 utility model.
In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.
In the description of the present utility model, "plurality" means two or more.
In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.
In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery case cover, comprising:
a cover body;
the gas-guide tube and the gas-guide tubes are arranged on the cover body, the gas-guide tubes are communicated with the gas-guide tube, and the gas-guide tubes are distributed at intervals and are suitable for being arranged opposite to the explosion-proof valve of the battery;
and the pressure sensor is arranged on the collecting pipe.
2. The battery case cover according to claim 1, wherein the manifold is a straight pipe and extends in the direction of arrangement of the batteries, and the plurality of air ducts are spaced apart in the direction of extension of the manifold.
3. The battery case cover of claim 1, wherein the flow cross-sectional area of the manifold is S, satisfying: 28mm of 2 ≤S≤320mm 2 。
4. A battery compartment cover according to any one of claims 1 to 3, wherein the manifold is integrated in the cover and the air duct is connected to an inner wall of the cover.
5. The battery case cover of claim 4 wherein said cover, said manifold, and said air duct are integrally formed plastic pieces.
6. A battery compartment cover according to any one of claims 1 to 3, comprising a top plate and a side plate connected to the top plate, the manifold being integrated in the top plate, the side plate being provided with mounting holes communicating to the manifold, the sensing portions of the pressure sensors being mounted to the mounting holes.
7. A battery module, comprising:
a battery case;
the battery case cover of any one of claims 1-6;
the batteries are placed in the battery box body, and explosion-proof valves of the batteries are opposite to the air ducts in a one-to-one correspondence manner;
and the battery management system is electrically connected with the pressure sensor.
8. The battery module of claim 7, wherein a projection of the air duct onto a cover plate of the battery covers the explosion-proof valve.
9. The battery module according to claim 8, wherein the cover plate of the battery is provided with a groove surrounding the explosion-proof valve, and an end portion of the air duct extends into the groove.
10. An energy storage system, comprising: the battery module according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320271097.4U CN219610653U (en) | 2023-02-14 | 2023-02-14 | Battery case lid, battery module and energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320271097.4U CN219610653U (en) | 2023-02-14 | 2023-02-14 | Battery case lid, battery module and energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219610653U true CN219610653U (en) | 2023-08-29 |
Family
ID=87756515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320271097.4U Active CN219610653U (en) | 2023-02-14 | 2023-02-14 | Battery case lid, battery module and energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219610653U (en) |
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2023
- 2023-02-14 CN CN202320271097.4U patent/CN219610653U/en active Active
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