A cross-flow mixed gas processing chamber structure and battery device

Abstract

The present application provides a cross-flow mixed gas processing chamber structure and a battery device, which relate to the field of gas mixing technology. The cross-flow mixed gas processing chamber structure includes an inner cavity, an outer shell, and a gas inlet assembly; the gas inlet assembly includes a first inlet pipe and a second inlet pipe, and the first inlet pipe is connected to the inner cavity; at least one hollow protrusion mechanism is provided on the outer surface of the inner cavity, and the hollow protrusion mechanism is provided with a plurality of vents, and the vents are connected to the inner cavity. The outer shell is sleeved on the outer surface of the inner cavity, and an intermediate flow channel is formed between the inner surface of the outer shell, the hollow protrusion mechanism and the inner surface of the inner cavity, and the second inlet pipe is connected to the intermediate flow channel. The cross-flow mixed gas processing chamber structure can achieve the technical effect of uniform gas mixing.

Description

Technical Field

[0001] The present application relates to the field of gas mixing technology, and in particular to a cross-flow mixed gas processing chamber structure and a battery device. Background Art

[0002] At present, most batteries take active early warning measures to prevent thermal runaway behavior, that is, by monitoring the battery status or gas composition, temperature and other parameters inside the battery pack to determine the probability of thermal runaway, and then take fire extinguishing measures to suppress the spread of thermal runaway, so as to minimize the impact range of thermal runaway of the single battery pack;

[0003] However, during the thermal runaway process, the decomposition reaction of the positive electrode of the lithium battery can produce flammable gas, which is accompanied by a high heat release rate. For combustion, when a process has reactants, a suitable oxidant concentration and high temperature at the same time, combustion will inevitably occur. Therefore, how to reduce the concentration of flammable gas has become the main means to effectively avoid thermal runaway of lithium batteries.

[0004] The gas mixing device in the prior art provides a hollow spiral distributor at the entrance of the gas processing chamber, through which an inert gas is introduced. Small holes are opened on the spiral distributor, and the inert gas is ejected from the holes to mix with the combustible gas flow in the cavity, thereby reducing the concentration of the combustible gas. However, if the gas mixing device is only provided with one spiral distributor, it is difficult to ensure uniform gas mixing; if the number of spiral distributors is increased, the concentration of the combustible gas cannot be effectively reduced, and the gas mixing is uneven. Utility Model Content

[0005] The purpose of the present application is to provide a cross-flow mixed gas processing chamber structure and a battery device, which can achieve the technical effect of uniform gas mixing.

[0006] In a first aspect, the present application provides a cross-flow mixed gas processing chamber structure, comprising an inner cavity, an outer shell, and a gas inlet assembly;

[0007] The gas inlet assembly includes a first inlet pipe and a second inlet pipe, wherein the first inlet pipe is in communication with the inner cavity;

[0008] At least one hollow protrusion mechanism is provided on the outer surface of the inner cavity, and the hollow protrusion mechanism is provided with a plurality of vents, and the vents are connected to the inner cavity. The outer shell is sleeved on the outer surface of the inner cavity, and an intermediate flow channel is formed between the inner surface of the outer shell, the hollow protrusion mechanism and the inner surface of the inner cavity, and the second inlet pipe is connected to the intermediate flow channel.

[0009] In the above implementation process, the cross-flow mixed gas processing chamber structure forms an intermediate flow channel by setting a hollow protrusion mechanism between the outer shell and the inner cavity, and setting air holes on the hollow protrusion mechanism; thus, after the first gas enters the inner cavity through the first gas pipeline, it can be ejected from the air holes on the hollow protrusion mechanism, and the first gas and the second gas entering the intermediate flow channel through the second inlet pipeline are cross-flow mixed, and as the second gas flows, more and more first gas will be added and mixed with the second gas, so that the second gas and the first gas are fully and evenly mixed, effectively reducing the concentration of the second gas; thus, the cross-flow mixed gas processing chamber structure can achieve the technical effect of uniform gas mixing.

[0010] Furthermore, the inner cavity further comprises a connecting mechanism, and the inner cavity is connected with the first inlet pipe via the connecting mechanism.

[0011] In the above implementation process, a connecting mechanism is provided to connect the inner cavity and the first inlet pipe; thus, by selecting the shape of the connecting mechanism, parameters such as the flow rate of the first gas / second gas can be adjusted, thereby adjusting the mixing efficiency of the first gas and the second gas.

[0012] Furthermore, the connecting mechanism is a conical connecting mechanism, the inlet end of the conical connecting mechanism is connected to the first inlet pipe, the outlet end of the conical connecting mechanism is connected to the inner cavity, and the diameter of the inlet end is smaller than the diameter of the outlet end.

[0013] Furthermore, the second inlet pipe is sleeved on the first inlet pipe, the inner surface of the second inlet pipe and the outer surface of the first inlet pipe form a second gas inlet flow channel, and the second gas inlet flow channel is connected to the intermediate flow channel.

[0014] In the above implementation process, after the second gas enters the second gas inlet flow channel through the second inlet pipe, it will gradually enter the middle flow channel along the outer surface of the conical connecting mechanism. In this process, the flow rate of the second gas can be effectively reduced, so that the second gas and the first gas can be mixed more fully.

[0015] Furthermore, the hollow protrusion mechanism is arranged along the axis of the inner cavity, and the axis of the inner cavity is parallel to the gas flow direction of the first inlet pipe.

[0016] In the above implementation process, after the first gas enters the inner cavity through the first inlet pipe, since the axis of the inner cavity is parallel to the gas flow direction of the first inlet pipe and the hollow protrusion mechanism is arranged along the axis of the inner cavity, it is more convenient for the first gas to be ejected from the vent hole of the hollow protrusion mechanism.

[0017] Furthermore, the hollow protrusion mechanism is provided with a plurality of ventilation holes on both sides along a preset direction, and the preset direction is perpendicular to the axis of the inner cavity.

[0018] In the above implementation process, when the second gas enters the intermediate flow channel through the second inlet pipe, the flow direction of the second gas is parallel to the axis of the inner cavity; and the first gas is ejected from the vent hole of the hollow protrusion mechanism, and the preset direction of the vent hole is perpendicular to the axis of the inner cavity, then the flow direction of the first gas is perpendicular to the flow direction of the second gas, so that the first gas and the second gas are cross-flow mixed, achieving the technical effect of uniform gas mixing.

[0019] Furthermore, the cross-flow mixed gas processing chamber structure also includes a bottom outlet cover plate, and the bottom outlet cover plate is sealed and installed with the inner cavity and the outer shell respectively.

[0020] In the above implementation process, the bottom outlet cover plate is sealed and installed with the inner cavity and the outer shell to prevent the mixed first gas and second gas from escaping; at the same time, the bottom outlet cover plate is provided with corresponding gas outlets for the mixed first gas and second gas to be discharged.

[0021] Further, the first inlet pipe is connected to an inert gas source.

[0022] Furthermore, the second inlet pipe is connected to a combustible gas source.

[0023] In a second aspect, the present application provides a battery device, comprising the cross-flow mixed gas processing chamber structure described in any one of the first aspects.

[0024] Other features and advantages disclosed in the present application will be described in the following description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology disclosed in the present application.

[0025] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 An axial side view of a cross-flow mixed gas processing chamber structure provided in an embodiment of the present application;

[0028] Figure 2 A front view of a cross-flow mixed gas processing chamber structure provided in an embodiment of the present application;

[0029] Figure 3 A right side view of the cross-flow mixed gas processing chamber structure provided in an embodiment of the present application;

[0030] Figure 4 A first top view of a cross-flow mixed gas processing chamber structure provided in an embodiment of the present application;

[0031] Figure 5 A second top view of the cross-flow mixed gas processing chamber structure provided in an embodiment of the present application.

[0032] Reference numerals: inner cavity 100 ; hollow protrusion mechanism 110 ; connection mechanism 120 ; outer shell 200 ; gas inlet assembly 300 ; first inlet pipe 310 ; second inlet pipe 320 ; bottom outlet cover plate 400 . DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0034] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0036] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0038] Generally, the gas mixing device in the prior art is provided with a hollow spiral distributor at the entrance of the gas processing chamber, through which an inert gas is introduced, and a small hole is opened on the spiral distributor. The inert gas is ejected from the hole and mixed with the combustible gas flow in the cavity, thereby reducing the concentration of the combustible gas. However, if the gas mixing device is provided with only one spiral distributor, it is difficult to ensure uniform gas mixing; if the number of spiral distributors is increased, the concentration of the combustible gas cannot be effectively reduced, and the gas mixing is uneven.

[0039] In order to solve the above-mentioned technical problems, the present application provides a cross-flow mixed gas processing chamber structure and a battery device, which can be applied to the gas mixing process; see Figures 1 to 5 , Figure 1 This is an axial side view of the cross-flow mixed gas processing chamber structure provided in an embodiment of the present application. Figure 2 This is a front view of the cross-flow mixed gas processing chamber structure provided in an embodiment of the present application. Figure 3 This is a right view of the cross-flow mixed gas processing chamber structure provided in an embodiment of the present application. Figure 4 This is a first top view of the cross-flow mixed gas processing chamber structure provided in an embodiment of the present application. Figure 5 A second top view of the cross-flow mixed gas processing chamber structure provided in an embodiment of the present application; wherein, Figure 1 , Figure 5 The cross-flow mixed gas processing chamber structures shown are all schematic diagrams of the structure in which the outer shell 200 is hidden;

[0040] The cross-flow mixed gas processing chamber structure includes an inner cavity 100, an outer shell 200, and a gas inlet assembly 300;

[0041] Exemplarily, the gas inlet assembly 300 includes a first inlet pipe 310 and a second inlet pipe 320 , and the first inlet pipe 310 is in communication with the inner cavity 100 ;

[0042] The first inlet pipe 310 can be fed with a first gas, and the second inlet pipe 320 can be fed with a second gas. The types of the first gas and the second gas are not limited in the embodiment of the present application. The first gas fed with the first inlet pipe 310 enters the inner cavity 100.

[0043] Exemplarily, at least one hollow protrusion mechanism 110 is provided on the outer surface of the inner cavity 100, and the hollow protrusion mechanism 110 is provided with a plurality of ventilation holes, which are connected to the inner cavity 100. The outer shell 200 is sleeved on the outer surface of the inner cavity 100, and an intermediate flow channel is formed between the inner surface of the outer shell 200, the hollow protrusion mechanism 110 and the inner surface of the inner cavity 100, and the second inlet pipe 320 is connected to the intermediate flow channel.

[0044] Exemplarily, the inner cavity 100 is connected to the vent hole, so that the first gas entering the inner cavity 100 can enter the intermediate flow channel between the outer shell 200 and the inner cavity 100 through the vent hole, and the second gas enters the intermediate flow channel through the second inlet pipe 320; thus, the first gas is ejected through the vent hole on the hollow protrusion mechanism 110, and cross-flow mixes with the second gas entering the intermediate flow channel, and as the second gas flows, more and more first gas will be added and mixed with the second gas, so that the second gas and the first gas are fully and evenly mixed, effectively reducing the concentration of the second gas.

[0045] In some embodiments, the cross-flow mixed gas processing chamber structure forms an intermediate flow channel by setting a hollow protrusion mechanism 110 between the outer shell 200 and the inner cavity 100, and setting an air hole on the hollow protrusion mechanism 110; thus, after the first gas enters the inner cavity 100 through the first inlet pipe 310, it can be ejected from the air hole on the hollow protrusion mechanism 110, and the first gas and the second gas entering the intermediate flow channel through the second inlet pipe 320 are cross-flow mixed, and as the second gas flows, more and more first gas will be added and mixed with the second gas, so that the second gas and the first gas are fully and evenly mixed, effectively reducing the concentration of the second gas; thus, the cross-flow mixed gas processing chamber structure can achieve the technical effect of uniform gas mixing.

[0046] Exemplarily, the inner cavity 100 further includes a connection mechanism 120 , and the inner cavity 100 is connected to the first inlet pipe 310 via the connection mechanism 120 .

[0047] Exemplarily, by providing a connecting mechanism 120, the inner cavity 100 and the first inlet pipe 310 are connected; thus, by selecting the shape of the connecting mechanism 120, parameters such as the flow rate of the first gas / second gas can be adjusted, thereby adjusting the mixing efficiency of the first gas and the second gas.

[0048] Exemplarily, the connection mechanism 120 is a conical connection mechanism, the inlet end of the conical connection mechanism is connected to the first inlet pipe 310, the outlet end of the conical connection mechanism is connected to the inner cavity 100, and the diameter of the inlet end is smaller than the diameter of the outlet end.

[0049] Exemplarily, the second inlet pipe 320 is sleeved on the first inlet pipe 310, and the inner surface of the second inlet pipe 320 and the outer surface of the first inlet pipe 310 form a second gas inlet flow channel, and the second gas inlet flow channel is connected to the middle flow channel.

[0050] Exemplarily, after the second gas enters the second gas inlet channel through the second inlet pipe 320, it gradually enters the middle channel along the outer surface of the conical connecting mechanism. During this process, the flow rate of the second gas can be effectively reduced, so that the second gas and the first gas are mixed more fully.

[0051] Exemplarily, the hollow protrusion mechanism 110 is disposed along the axis of the inner cavity 100 , and the axis of the inner cavity 100 is parallel to the gas flow direction of the first inlet pipe 310 .

[0052] Exemplarily, after the first gas enters the inner cavity 100 through the first inlet pipe 310, since the axis of the inner cavity 100 is parallel to the gas flow direction of the first inlet pipe 310 and the hollow protrusion mechanism 110 is arranged along the axis of the inner cavity 100, it is more convenient for the first gas to be ejected from the vent hole of the hollow protrusion mechanism 110.

[0053] In some embodiments, the angle between the axis of the inner cavity 100 and the gas flow direction of the first inlet pipe 310 does not need to be strictly limited to 0°, and a certain angle error may exist; optionally, the axis of the inner cavity 100 can be nearly parallel to the gas flow direction of the first inlet pipe 310.

[0054] Exemplarily, the hollow protrusion mechanism 110 is provided with a plurality of vent holes along both sides of a preset direction, and the preset direction is perpendicular to the axis of the inner cavity 100 .

[0055] Exemplarily, when the second gas enters the middle flow channel through the second inlet pipe 320, the flow direction of the second gas is parallel to the axis of the inner cavity 100; and the first gas is ejected from the vent hole of the hollow protrusion mechanism 110, and the preset direction of the vent hole is perpendicular to the axis of the inner cavity 100, then the flow direction of the first gas is perpendicular to the flow direction of the second gas, so that the first gas and the second gas are cross-flow mixed, achieving the technical effect of uniform gas mixing.

[0056] In some embodiments, the angle between the axis of the inner cavity 100 and the preset direction does not need to be strictly limited to 90°, and a certain angle error may exist; optionally, the axis of the inner cavity 100 can be nearly perpendicular to the preset direction.

[0057] Exemplarily, the cross-flow mixed gas processing chamber structure further includes a bottom outlet cover plate 400 , and the bottom outlet cover plate 400 is sealed and installed with the inner cavity 100 and the outer shell 200 , respectively.

[0058] Exemplarily, the bottom outlet cover plate 400 is sealed and installed with the inner cavity 100 and the outer shell 200 to prevent the mixed first gas and second gas from escaping; at the same time, the bottom outlet cover plate 400 is provided with corresponding gas outlets for the mixed first gas and second gas to be discharged.

[0059] Illustratively, the first inlet conduit is connected to a source of inert gas.

[0060] In some embodiments, the inert gas source may be nitrogen (N2) or other gases, which is provided here only as an example and not as a limitation.

[0061] Exemplarily, the second inlet conduit is connected to a combustible gas source.

[0062] In some embodiments, the combustible gas source is a gas such as hydrogen (H2), which is only used as an example and not as a limitation.

[0063] Illustratively, an embodiment of the present application provides a battery device, including: Figures 1 to 5 The cross-flow mixed gas processing chamber structure shown; when the cross-flow mixed gas processing chamber structure is applied to a battery device, the second inlet pipe 320 is connected to the battery pack. At this time, the combustible gas generated by the decomposition reaction of the positive electrode of the battery enters the cross-flow mixed gas processing chamber structure through the second inlet pipe 320, and is fully mixed with the inert gas entering the cross-flow mixed gas processing chamber structure through the first inlet pipe 310, thereby effectively reducing the concentration of the combustible gas, thereby effectively suppressing thermal runaway of the battery.

[0064] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.

[0065] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0066] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0067] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A cross-flow mixed gas processing chamber structure, characterized in that: It includes an inner cavity, an outer shell, and a gas inlet assembly; The gas inlet assembly includes a first inlet pipe and a second inlet pipe, wherein the first inlet pipe is in communication with the inner cavity; At least one hollow protrusion mechanism is provided on the outer surface of the inner cavity, and the hollow protrusion mechanism is provided with a plurality of vents, and the vents are connected to the inner cavity. The outer shell is sleeved on the outer surface of the inner cavity, and an intermediate flow channel is formed between the inner surface of the outer shell, the hollow protrusion mechanism and the inner surface of the inner cavity, and the second inlet pipe is connected to the intermediate flow channel.

2. The cross-flow mixed gas processing chamber structure according to claim 1, characterized in that: The inner cavity further includes a connecting mechanism, and the inner cavity is connected to the first inlet pipe through the connecting mechanism.

3. The cross-flow mixed gas processing chamber structure according to claim 2, characterized in that: The connecting mechanism is a conical connecting mechanism, the inlet end of the conical connecting mechanism is connected to the first inlet pipe, the outlet end of the conical connecting mechanism is connected to the inner cavity, and the diameter of the inlet end is smaller than the diameter of the outlet end.

4. The cross-flow mixed gas processing chamber structure according to claim 3, characterized in that: The second inlet pipe is sleeved on the first inlet pipe, the inner surface of the second inlet pipe and the outer surface of the first inlet pipe form a second gas inlet flow channel, and the second gas inlet flow channel is communicated with the middle flow channel.

5. The cross-flow mixed gas processing chamber structure according to claim 1, characterized in that: The hollow protrusion mechanism is arranged along the axis of the inner cavity, and the axis of the inner cavity is parallel to the gas flow direction of the first inlet pipe.

6. The cross-flow mixed gas processing chamber structure according to claim 5, characterized in that: The hollow protrusion mechanism is provided with a plurality of vent holes on both sides along a preset direction, and the preset direction is perpendicular to the axis of the inner cavity.

7. The cross-flow mixed gas processing chamber structure according to claim 1, characterized in that: The cross-flow mixed gas processing chamber structure also includes a bottom outlet cover plate, and the bottom outlet cover plate is sealed and installed with the inner cavity and the outer shell respectively.

8. The cross-flow mixed gas processing chamber structure according to claim 1, characterized in that: The first inlet conduit is connected to an inert gas source.

9. The cross-flow mixed gas processing chamber structure according to claim 1 or 8, characterized in that: The second inlet conduit is connected to a combustible gas source.

10. A battery device, characterized in that: It comprises the cross-flow mixed gas processing chamber structure as described in any one of claims 1 to 9.

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