CN112531279B - Explosion-proof battery power supply - Google Patents
Explosion-proof battery power supply Download PDFInfo
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- CN112531279B CN112531279B CN202011197343.3A CN202011197343A CN112531279B CN 112531279 B CN112531279 B CN 112531279B CN 202011197343 A CN202011197343 A CN 202011197343A CN 112531279 B CN112531279 B CN 112531279B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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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 application provides an explosion-proof battery power supply, which comprises a box body and an explosion-proof box body; the first area of the battery module in the box body comprises all electrodes, and the second area comprises all pressure relief valves; a first potting layer covering the first region, the first opening of the first potting layer corresponding to the pressure relief valve such that the pressure relief valve can vent through the first opening; and a gas treatment device disposed in the case for treating gas released during thermal runaway of the battery module. The gas treatment device is adopted to realize a gas treatment mechanism, so that the influence of the release gas of the thermal runaway of the battery on the environment outside the box body is effectively reduced, the overall application safety of the explosion-proof battery power supply is improved, the realization cost and weight of the explosion-proof mechanism of the battery are effectively reduced, other exposed conductors are not electrified except the battery module which is subjected to the pouring treatment when the explosion environment appears, the contact between an ignition source and the explosion-proof gas is timely blocked, and the economy and the explosion-proof control effect realized by the explosion-proof mechanism are effectively improved.
Description
Technical Field
The application relates to the technical field of battery safety application, in particular to an explosion-proof battery power supply.
Background
At present, a large-capacity explosion-proof battery power supply used underground in a coal mine is generally composed of a large number of single batteries, and a power supply box can accommodate and protect a battery pack. When an extreme fault such as thermal runaway occurs in a single battery, a large amount of gas is generated and released, the risk that the released gas is accumulated in a power supply box to cause an explosive accident of the box body due to overlarge pressure exists, and a great potential safety hazard is brought to the safe operation of a battery power supply, however, no good solution exists in the industry at present, and the solution is needed to be solved.
Disclosure of Invention
The present application aims to solve, at least to some extent, one of the technical problems in the related art.
Therefore, the purpose of the application is to provide an explosion-proof battery power supply, which can realize a gas treatment mechanism aiming at a box body, effectively reduce the influence of battery thermal runaway release gas on the environment outside the box body, promote the overall application safety of the explosion-proof battery power supply, effectively reduce the realization cost and weight of the explosion-proof battery power supply, and ensure that other exposed conductors are not electrified except a battery module which is subjected to pouring treatment when an explosive environment appears, thereby realizing timely blocking of the contact of an ignition source and the explosive gas and effectively promoting the economy and explosion-proof control effect realized by the explosion-proof battery power supply.
In order to achieve the above object, an explosion-proof battery power supply according to an embodiment of the present application includes: the explosion-proof box body is connected with the box body; the battery module is arranged in the box body, wherein the battery module comprises a first area and a second area, the first area comprises all electrodes in the battery module, and the second area comprises all pressure relief valves in the battery module; a first potting layer covering the first region of the battery module, the first potting layer having a first opening corresponding to the pressure relief valve such that the pressure relief valve can vent through the first opening; and a power control module arranged in the explosion-proof box body; a gas treatment device disposed in the case for treating gas released during thermal runaway of the battery module; the second casting layer at least covers the second area of the battery module, wherein the impact strength of the second casting layer is smaller than that of the pressure release valve when the pressure release valve is opened, so that the second casting layer is broken when the pressure release valve is opened; a third potting layer covering the second potting layer, wherein the third potting layer has a second opening at the pressure relief valve location, the second opening corresponding to the pressure relief valve such that the pressure relief valve can vent through the second opening, the third potting layer having an impact strength greater than the impact strength of the first potting layer; a first support provided in the case for supporting and fixing the battery module; the second supporting piece is arranged in the explosion-proof box body and is used for supporting and fixing the power supply control module; wherein the second encapsulant layer also covers the first region, and the impact strength of the second encapsulant layer is less than the impact strength of the first encapsulant layer.
According to the explosion-proof battery power supply, the box body and the explosion-proof box body connected with the box body are configured for the explosion-proof battery power supply, the battery module is arranged in the box body, the first casting layer is arranged in the first area of the battery module, and the gas treatment device is arranged in the box body and used for treating gas released in the thermal runaway process of the battery module, the gas treatment mechanism is realized by adopting the gas treatment device, the influence of the release gas of the thermal runaway of the battery on the environment outside the box body is effectively reduced, the overall application safety of the explosion-proof battery power supply is improved, the realization cost and the weight of the explosion-proof mechanism of the battery are effectively reduced, and other exposed conductors are not electrified except the battery module which is subjected to casting treatment when the explosive environment appears, so that the contact of an ignition source and the explosive gas is blocked in time, and the economy and the explosion-proof control effect realized by the explosion-proof mechanism are effectively improved.
Additional aspects and advantages of the application 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 application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an explosion-proof battery power supply according to an embodiment of the present application;
fig. 2 is a schematic structural view of a battery module according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a power control module according to another embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an explosion-proof battery power supply according to another embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the present application include all alternatives, modifications, and equivalents as may be included within the spirit and scope of the appended claims.
Fig. 1 is a schematic structural diagram of an explosion-proof battery power supply according to an embodiment of the present application.
Referring to fig. 1, the explosion-proof battery power supply 10 includes: a case 11 and an explosion-proof case 12 connected to the case 11; a battery module 13 disposed in the case 11, wherein the battery module 13 includes a first region including all the electrodes 131 in the battery module 13 and a second region including all the pressure release valves 132 in the battery module 13; a first potting layer 133 covering a first region of the battery module 13, the first potting layer 133 having a first opening corresponding to the pressure relief valve 132 such that the pressure relief valve 132 can vent through the first opening; and a power control module 14 disposed in the explosion-proof housing 12; and a gas treatment device 20 disposed in the case 11 for treating gas released during thermal runaway of the battery module 13.
The gas treatment device 20 in the present embodiment can automatically treat all components or specific components of the released gas when the gas is released during thermal runaway of the battery module.
In the embodiment of the present application, the explosion-proof battery power supply 10 is exemplified as a lithium battery, or may be any other possible battery for underground operation of a coal mine, which is not limited.
The battery module 13 in the embodiment of the application is configured in the case 11, the explosion-proof case 12 connected with the case 11 is configured, and the power control module 14 is configured in the explosion-proof case 12, so that the power control module 14 can control all switch control units to be disconnected, other exposed conductors except the battery module 13 subjected to the pouring treatment are ensured to be uncharged when an explosive environment occurs, and the contact between an ignition source and explosive gas is blocked from the source. The case body provided with the power supply control module 14 is only set as an explosion-proof case body, and the case body 11 provided with the battery module 13 is set as a normal case body, so that the realization cost and weight of a battery explosion-proof mechanism can be effectively reduced, the isolation configuration of the power supply control module 14 and the battery module 13 is realized, and the balance between the realization economy of the explosion-proof mechanism and the explosion-proof control effect is effectively improved.
The explosion-proof case 12 may be welded to the case 11, or the explosion-proof case 12 may be welded to a side surface of the case 11, which is not limited thereto.
The battery module 13 may be formed by a battery pack formed by connecting lithium batteries in series or in parallel and a battery pack management and protection unit matched with the battery pack, the power control module 14 may include an electrical circuit switching unit and a communication circuit switching unit, for example, referring to fig. 2, fig. 2 is a schematic structural diagram of a battery module according to another embodiment of the present application, and the battery module 13 includes: referring to fig. 3, fig. 3 is a schematic structural diagram of a power control module according to another embodiment of the present application, and the power control module 14 may include, for example, an electrical circuit switching unit 301 and a communication circuit switching unit 302.
The electric circuit switching unit 301 and the communication circuit switching unit 302 in the above-described power supply control module 14 are each constituted by a certain number of relays, a certain number of fuses, and a manual mechanical switch.
When the explosive dangerous mixture concentration in the environment is detected to exceed the standard, the power control module 14 can control all the electric circuit switch units 301 and the communication circuit switch units 302 to be disconnected, so that other exposed conductors except the battery module 13 subjected to the casting treatment are not electrified when the explosive environment occurs, and the contact between an ignition source and explosive gas is blocked from the source.
In some embodiments of the present application, referring to fig. 4, further comprising: and a second molding layer 134 covering at least a second region of the battery module 13, wherein the impact strength of the second molding layer 134 is smaller than that of the pressure release valve when opened, so that the second molding layer 134 is broken when the pressure release valve 132 is released.
In some embodiments of the present application, the second encapsulant layer 134 also covers the first region, and the impact strength of the second encapsulant layer 134 is less than the impact strength of the first encapsulant layer 133.
It will be appreciated that if the battery module disposed in the case 11 fails, resulting in a thermal runaway accident, a large amount of gas such as hydrogen, methane, ethylene, carbon monoxide, carbon dioxide, etc. may be released, and thus, in the embodiment of the present application, the gas treatment device 20 may be disposed in the case 11, so as to timely treat the above-mentioned hydrogen, methane, ethylene, carbon monoxide, carbon dioxide, etc. gas.
The gas treatment device 20 may treat the gas by the principle of physical adsorption, or may treat the gas by chemical reaction, for example, may incorporate a material having a gas adsorption function to adsorb the gas. The material with the gas adsorption function can be one material or a combination of a plurality of materials, and the material is not limited.
In this embodiment of the application, just through configuration gas treatment device 20 to box 11 to can be in the thermal runaway in-process at the battery module, in time handle the gas that the battery module released, avoid the explosion risk that the inside pressure of box 11 strengthens in the twinkling of an eye and leads to, thereby promote the security performance that explosion-proof battery power is whole to be used.
Alternatively, the gas treatment device 20 is disposed on the case cover 102 of the case 11, or disposed in a free space inside the case 11, or disposed on a wall of a free space portion inside the explosion-proof case 12, and has flexible installation and good practicability.
In some embodiments of the present application, referring to fig. 4, in fig. 4, two mounting locations of the gas treatment device 20 are shown, exemplified in dashed lines, including a first mounting location 210 and a second mounting location 220, the first mounting location 210 indicating: the gas treatment device 20 is disposed on the cover 102 of the housing 11, and the second mounting position 220 indicates: the gas processing device 20 is disposed in a free space inside the housing 11.
In other embodiments, the gas treatment device 20 may be disposed on the wall of the free space portion of the explosion proof housing 12, without limitation.
In some embodiments of the present application, referring to fig. 4, a third molding layer 135 covering a second molding layer 134, wherein the third molding layer 135 has a second opening at the location of the relief valve 132, the second opening corresponding to the relief valve 132, such that the relief valve 132 can vent through the second opening, the third molding layer 135 has an impact resistance greater than that of the first molding layer 133, that is, the third molding layer 135 is a layer of molding layer covering the second molding layer 134, which serves as a protection for the second molding layer 134 and the first molding layer 133,
in some embodiments of the present application, the first, second and third potting layers 133, 134, 135 are silicone or epoxy, or may be any other possible potting material, without limitation.
It should be noted that, in the embodiment of the present application, the first casting layer 133 may be used for the in-situ casting protection, or the combination of the first casting layer 133 and the second casting layer 134 may be used for the in-situ casting protection, or the combination of the first casting layer 133, the second casting layer 134, and the third casting layer 135 may be used for the in-situ casting protection, which is not limited.
In some embodiments of the present application, the first, second and third potting layers 133, 134 and 135 fill up the space between the battery module 13 and the side wall and bottom of the case 11, so that they closely fit with the case body and fix the battery module 13, thereby making the potting protection structure in the case 11 have a better sealing effect and improving the overall potting protection effect of the explosion-proof battery power supply 10.
By configuring the first, second and third potting layers 133, 134, 135 as a silicone gel or epoxy resin, the manufacturing process of the potting layers can be simplified, and a good potting protection effect can be ensured, with good practicality and applicability.
It can be appreciated that, in general, the main potential ignition source of the lithium battery is a charged component (for example, the electrode 131 of the battery module 13 in the present application), that is, the positive and negative terminals of the lithium battery cell in the battery module 13, so in the embodiment of the present application, by covering and disposing the first potting layer 133 in the first area of the battery module 13, the corresponding electrode 131 portion of the battery cell is effectively protected by the first potting layer 133, and by disposing the second potting layer 134 at least covering the second area of the battery module 13, while protecting the first potting layer 133 by the second potting layer 134, the pressure release valve 132 portion is also protected, so as to realize effective potting protection.
For example, after the battery module 13 is mounted in the case 11 in the explosion-proof housing, the battery module 13 and its support (first support 40) are subjected to a potting process with a potting compound, the bottom and sides of which are closely bonded to the explosion-proof case 12 of the case 11, and a certain free space exists between the upper surface of the potting compound and the case cover 102.
In the above-mentioned architecture design of the explosion-proof battery power supply 10, the first sealing layer 133 configured in the second area has a first opening, and the first opening corresponds to the pressure release valve 132, so that the pressure release valve 132 can exhaust through the first opening, and the possible explosion risk caused by gas sealing in the sealing layer can be effectively avoided.
The impact strength of the second sealing layer 134 is smaller than that of the opening of the pressure release valve, so that the pressure release valve 132 breaks the second sealing layer 134 when the pressure release valve 132 is opened, and when the second sealing layer 134 is damaged after the pressure release valve 132 is opened, the generated gas is discharged to the tank body through the gas generated by the pressure release valve 132, and the gas which is not completely treated by the gas treatment device can be discharged to the external environment of the tank body 11 through the explosion-proof pressure release device (in the embodiment of the application, the explosion-proof pressure release device can be arranged or can be not arranged, and the limitation is not made on the explosion-proof pressure release device) arranged on the tank body or the tank cover, so that the case body 11 is prevented from being damaged due to the fact that the gas is accumulated in the tank body 11 to generate too high pressure, and the explosion extreme damage is avoided.
According to the structural design mode of the explosion-proof battery power supply 10 in the embodiment of the application, when the pressure release valve 132 of the battery module 13 is opened, the generated pressure can still effectively protect the positive terminal and the negative terminal of the battery module 13 even if the second sealing layer 134 is damaged, so that the potential ignition source and the effective isolation of explosive gas are realized, the occurrence probability of accidents such as combustion and explosion is greatly reduced, and the safety protection performance of the explosion-proof battery power supply 10 is improved.
The impact strength of the third sealing layer 135 is configured to be greater than that of the first sealing layer 133, so that the third sealing layer 135 can form the outermost protection, that is, the third sealing layer 135 can further enhance the protection function of the first sealing layer 133, and the damage degree of the second sealing layer 134 can be effectively limited due to the protection and reinforcement effects of the third sealing layer 135, that is, the damage part can be limited at the pressure release valve 132 to the greatest extent, thereby greatly reducing the damage effect on the first sealing layer 133 and improving the reliability of the sealing explosion protection method.
In some embodiments of the present application, referring to fig. 4, the case 11 includes:
a case body 101 and an explosion-proof case body 104; the case cover 102 and the explosion-proof case cover 105 are respectively arranged on the case body 101 and the explosion-proof case body 104, wherein the case cover 102 and the explosion-proof case cover 105 are connected with the case body 101 and the explosion-proof case body 104 through bolts 103, and a free space is formed between the upper surface of the potting layer covering the battery module 13 in the case 11 and the case cover 102, so that the sealing performance of the whole explosion-proof battery power supply 10 is improved, a certain buffer space is provided for the aggregation of the pressure gas, the triggering of an explosion-proof protection mechanism is prevented from being excessively sensitive, and other components (such as a pressure sensor) can be assisted to be configured by providing the free space, so that the explosion-proof function of the explosion-proof battery power supply 10 is assisted to be enriched.
The case 11 may be regarded as a sealing cavity, and the explosion-proof case 12 connected to the case 11 may be regarded as a wiring cavity, that is, the explosion-proof case 12 is configured with an explosion-proof processing mechanism, while the case 11 is not configured with an explosion-proof processing mechanism, and the sealing joint 15 disposed between the explosion-proof case 12 and the case 11, that is, the case 11 and the explosion-proof case 12 connected thereto are connected by the sealing joint 15, thereby ensuring the overall sealing performance of the explosion-proof battery power supply 10 and effectively avoiding the occurrence of secondary explosion hazard.
In some embodiments of the present application, the explosion-proof battery power supply 10 further includes: and a sealing joint 15 provided between the explosion-proof case 12 and the case 11, wherein the battery module 13 and the power control module 14 are electrically connected through the sealing joint 15 between the case 11 and the explosion-proof case 12.
The sealing joint 15 may be a glan head, which is not limited thereto.
The gram head mainly plays a role in fastening and sealing the cable, the cable is locked through the gram, the cable does not generate axial displacement and radial rotation, so that the normal connection of the cable is ensured, the sealing is commonly called IP protection, namely dust prevention and water prevention, the gram head can also be applied to a shielded cable waterproof joint, and the gram head is applicable to an armored cable waterproof joint with a shielding layer; the explosion-proof cable waterproof connector is suitable for dangerous areas such as mines and the like.
From this, through the gram head that disposes between box 11 and the explosion-proof box 12 in this application for battery module 13 and power control module 14 electricity are connected, ensure that the connection of the inside cable of explosion-proof battery power 10 is more firm, guarantee explosion-proof battery power 10 framework stability, guarantee sealing performance between box 11 and the explosion-proof box 12 promotes explosion-proof security level from whole.
In some embodiments of the present application, referring to fig. 4, the explosion-proof battery power supply 10 further includes:
a first pressure sensor 16 provided in the case 11; a first pressure relief device 17 provided on the cover 102 of the case 11 for relieving the pressure in the case 11 to the outside when the pressure in the case 11 increases; a second pressure sensor 18 disposed within the explosion proof housing 12; and a second pressure relief device 19 provided in the explosion-proof case 12 for relieving the pressure in the explosion-proof case 12 to the outside when the pressure in the explosion-proof case 12 increases.
The first pressure relief device 17 may be, for example, a flame arrester, a one-way valve, or a combination of a flame arrester and a one-way valve, the second pressure relief device 19 may be, for example, a flame arrester, a one-way valve, or a combination of a flame arrester and a one-way valve, or the first pressure relief device 17 or the second pressure relief device 19 may also be a combination of one or more flame arresters, which is not limited.
In this embodiment of the present application, the pressure relief device may be provided, or the pressure relief device may not be provided, which is not limited.
The second pressure threshold may be smaller than or equal to the first pressure threshold, thereby effectively improving the application rationality of the pressure relief.
The pressure sensor disposed in the case 11 may be referred to as a first pressure sensor 16, and the pressure sensor disposed in the explosion-proof case 12 may be referred to as a second pressure sensor 18, which is a device or apparatus capable of sensing a pressure signal and converting the pressure signal into a usable output electrical signal according to a certain rule.
That is, the first pressure sensor 16 is disposed in the case 11, and the second pressure sensor 18 is disposed in the explosion-proof case 12, and then the pressure generated by the gas in the case 11 is monitored by the first pressure sensor 16, and the pressure generated by the gas in the explosion-proof case 12 is monitored by the second pressure sensor 18, so that when the internal pressure of the case 11 or the explosion-proof case 12 is monitored to be too high, the electrical connection between the explosion-proof battery power supply and the outside is timely disconnected. .
In some embodiments of the present application, referring to fig. 4, the explosion-proof battery power supply further includes:
a first support member 40 provided in the case 11, the first support member 40 for supporting and fixing the battery module 13; the second supporting piece 50 is arranged in the explosion-proof box 12, the second supporting piece 50 is used for supporting and fixing the power supply control module 14, that is, the battery module 13 can be fixedly installed in the box 11 through the first supporting piece 40, and the power supply control module 14 can be fixedly installed in the explosion-proof box 12 through the second supporting piece 50, so that the installation stability of the battery module 13 and the power supply control module 14 is effectively guaranteed, meanwhile, the heat dissipation of the battery module 13 and the power supply control module 14 can be facilitated, the risk caused by overhigh temperature of the battery module 13 and the power supply control module 14 is effectively avoided, and the overall safety performance of the explosion-proof battery power supply 10 is effectively improved from the angle of temperature control.
In this embodiment, through the explosion-proof battery power supply configuration box and the explosion-proof box that links to each other with the box, the battery module that sets up in the box, the first watering layer of the first region of cover battery module, and the gas treatment device who sets up in the box, be used for handling the gas that the battery module thermal runaway in-process released, adopt gas treatment device to realize gas treatment mechanism, effectively reduce the influence of battery thermal runaway release gas to the box external environment, promote the holistic application security of explosion-proof battery power, effectively reduce the realization cost and the weight of battery explosion-proof mechanism, and ensure when explosive environment appears except that the battery module of processing is watered, other exposure conductors are uncharged, thereby realize in time blocking the contact of ignition source and explosive gas, the economic nature and the explosion-proof control effect that the effective promotion explosion-proof mechanism realized.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
In the description of the present specification, a description referring to terms "one embodiment," "some 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 present application. 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.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (6)
1. An explosion-proof battery power supply, comprising:
the explosion-proof box body is connected with the box body;
the battery module is arranged in the box body, wherein the battery module comprises a first area and a second area, the first area comprises all electrodes in the battery module, and the second area comprises all pressure relief valves in the battery module;
a first potting layer covering the first region of the battery module, the first potting layer having a first opening corresponding to the pressure relief valve such that the pressure relief valve can vent through the first opening; and
the power supply control module is arranged in the explosion-proof box body;
a gas treatment device disposed in the case for treating gas released during thermal runaway of the battery module;
the second casting layer at least covers the second area of the battery module, wherein the impact strength of the second casting layer is smaller than that of the pressure release valve when the pressure release valve is opened, so that the second casting layer is broken when the pressure release valve is opened;
a third potting layer covering the second potting layer, wherein the third potting layer has a second opening at the pressure relief valve location, the second opening corresponding to the pressure relief valve such that the pressure relief valve can vent through the second opening, the third potting layer having an impact strength greater than the impact strength of the first potting layer;
a first support provided in the case for supporting and fixing the battery module;
the second supporting piece is arranged in the explosion-proof box body and is used for supporting and fixing the power supply control module;
wherein the second encapsulant layer also covers the first region, and the impact strength of the second encapsulant layer is less than the impact strength of the first encapsulant layer.
2. The explosion-proof battery power supply according to claim 1, characterized by further comprising:
when gas is released during thermal runaway of the battery module, the gas treatment device may automatically treat all components or specific components in the released gas.
3. The explosion-proof battery power supply of claim 1, wherein the case and the explosion-proof case comprise:
a case body and an explosion-proof case body;
the battery module comprises a box body, a box cover, an explosion-proof box cover, a box cover and a cover, wherein the box cover and the explosion-proof box cover are respectively arranged on the box body and the explosion-proof box body, the box cover and the explosion-proof box body are connected through bolts, and a free space is reserved between the upper surface of the box body, which is covered by the pouring layer of the battery module, and the box cover.
4. The explosion-proof battery power supply as set forth in claim 3, wherein said gas treatment device is provided on a cover of said case, or in said free space inside said case, or on a wall of said free space portion inside said explosion-proof case.
5. The explosion-proof battery power supply as set forth in claim 1, further comprising:
the sealing joint is arranged between the explosion-proof box body and the box body, wherein the battery module is electrically connected with the power supply control module through the sealing joint between the box body and the explosion-proof box body.
6. The explosion-proof battery power supply as set forth in claim 1, further comprising:
a first pressure sensor disposed in the tank;
the first pressure relief device is arranged on the box cover of the box body and is used for relieving the pressure in the box body to the outside when the pressure in the box body is increased;
a second pressure sensor disposed within the explosion proof housing;
the second pressure relief device is arranged in the explosion-proof box body and is used for relieving the pressure in the explosion-proof box body to the outside when the pressure in the explosion-proof box body is increased.
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| CN202011197343.3A CN112531279B (en) | 2020-10-30 | 2020-10-30 | Explosion-proof battery power supply |
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| CN202011197343.3A CN112531279B (en) | 2020-10-30 | 2020-10-30 | Explosion-proof battery power supply |
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| CN112531279B true CN112531279B (en) | 2023-07-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013146680A (en) * | 2012-01-19 | 2013-08-01 | Kurita Water Ind Ltd | Treatment material for jet gas from nonaqueous electrolyte secondary battery |
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| JP6660696B2 (en) * | 2015-09-17 | 2020-03-11 | 三菱重工業株式会社 | Explosion-proof equipment |
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