CN220895764U

CN220895764U - Battery thermal runaway discharging device and battery

Info

Publication number: CN220895764U
Application number: CN202321068248.2U
Authority: CN
Inventors: 阮国源; 蒙玉宝; 熊永聪; 张华康; 曹波; 左鼎
Original assignee: Wuhan Eve Energy Storage Co ltd
Current assignee: Wuhan Eve Energy Storage Co ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2024-05-03
Anticipated expiration: 2033-04-28

Abstract

The utility model relates to a battery thermal runaway discharging device and a battery, wherein the battery thermal runaway discharging device comprises a discharging pipe and a quick connector, the discharging pipe is used for discharging combustible gas generated by the battery thermal runaway, the quick connector is connected with the battery, the discharging pipe is connected with the quick connector in a clamping way, the discharging pipe is provided with a first side face, the quick connector is provided with a second side face, the first side face is abutted with the second side face, one of the first side face and the second side face is provided with a boss, the other of the first side face and the second side face is provided with a slot, and the boss is spliced with the slot. The battery thermal runaway discharging device is connected with the discharging pipe through the quick connector in a clamping manner, so that the discharging pipe is connected with a battery quickly, the battery thermal runaway discharging device is convenient to assemble and disassemble, time-saving and labor-saving, high in operation efficiency, free of using welding equipment or other locking tools, and cost-saving; through boss and slot cooperation, be convenient for guide when the drain pipe is connected with quick-operation joint, promote connecting efficiency.

Description

Battery thermal runaway discharging device and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery thermal runaway discharging device and a battery.

Background

With the gradual development of the field of battery energy storage, the safe use of batteries is also receiving more attention. Overheat, overcharge and overdischarge can lead to heat collection in the battery in the use process, a large amount of heat accumulation leads to temperature rise in the battery, thermal runaway can occur when the temperature rises to the limit that the battery can bear, a large amount of combustible gas mixture can be produced when the battery thermal runaway, for example: h ₂、CO、CH₄, etc., the combustible gas mixture is accumulated in the battery to raise the pressure in the battery, when the pressure in the battery reaches a certain limit, the battery can release the combustible gas mixture into the battery compartment by self explosion, and the contact of the combustible gas mixture and oxygen is easy to cause fire. At present, an exhaust pipe is generally used to exhaust the combustible gas generated by thermal runaway of the battery, and the exhaust pipe is usually connected by welding after the battery is installed at a set position. The prior art has the following technical defects: the mode of welding the exhaust pipe and the battery needs to utilize extra welding equipment, so that the cost investment is higher, the welding process is complex, time and labor are wasted, the operation efficiency is low, the exhaust pipe is not detachable, the exhaust pipe can only be replaced integrally after leakage or battery damage in the later period, and the maintenance cost is higher.

Disclosure of utility model

One object of an embodiment of the utility model is to: provided is a battery thermal runaway discharging device which has a simple structure and is convenient to assemble and disassemble.

Another object of an embodiment of the utility model is to: the battery is simple in structure and good in safety and practicability.

To achieve the purpose, the embodiment of the utility model adopts the following technical scheme:

In a first aspect, a thermal runaway battery discharge device is provided, including a discharge tube and a quick connector, the discharge tube is used for discharging the generated combustible gas of thermal runaway battery, the quick connector with the battery is connected, the discharge tube with the quick connector buckle is connected, the discharge tube has a first side, the quick connector has a second side, the first side with the butt of second side, one of them is provided with the boss, another of them is provided with the slot, the boss with the slot grafting.

As a preferable mode of the battery thermal runaway discharging device, one of the discharging pipe and the quick connector is provided with a first passage, the other of the discharging pipe and the quick connector is provided with a second passage, the first passage is communicated with the second passage, the boss is circumferentially arranged along the outer periphery of the first passage, and the slot is circumferentially arranged along the outer periphery of the second passage.

As a preferable mode of the battery thermal runaway discharging device, the boss is abutted with the groove wall of the slot; and/or the number of the groups of groups,

The boss is abutted with the bottom of the slot.

As a preferred embodiment of the battery thermal runaway discharging device, the battery thermal runaway discharging device further includes a first gasket, and the first gasket is interposed between the first side and the second side.

As a preferred scheme of the battery thermal runaway discharging device, a ring-shaped surrounding wall is arranged on the periphery of the first side face, the quick connector is inserted into the surrounding wall, at least two buckles are arranged on one of the inner side face of the surrounding wall and the periphery of the quick connector, and a clamping groove for clamping the buckles is arranged on the other one of the inner side face of the surrounding wall and the periphery of the quick connector; or alternatively, the first and second heat exchangers may be,

The periphery of the second side face is annularly provided with a circle of surrounding wall, the discharge pipe is inserted into the surrounding wall, at least two buckles are arranged on one of the inner side face of the surrounding wall and the periphery of the discharge pipe, and a clamping groove for clamping the buckles is formed in the other one of the inner side face of the surrounding wall and the periphery of the discharge pipe.

As a preferred scheme of battery thermal runaway discharging equipment, the periphery annular of first side sets up the round the enclosing wall, the medial surface of enclosing wall has been seted up the draw-in groove, the draw-in groove includes first recess and second recess, the length of second recess is followed perpendicularly discharging tube length direction's direction extends, the one end intercommunication of first recess the second recess, the other end of first recess runs through the terminal surface of enclosing wall, first recess with the second recess is the contained angle setting, the buckle is followed first recess slide-in to the second recess, the buckle joint in the second recess.

In a second aspect, a battery is provided, including a housing and the above battery thermal runaway discharging device, the housing is provided with a pressure relief port, and the battery thermal runaway discharging device is in communication with the pressure relief port.

As a preferred embodiment of a battery, the battery further includes a safety valve;

The safety valve is arranged at the pressure relief opening; or alternatively, the first and second heat exchangers may be,

The quick connector of the battery thermal runaway discharging device is provided with a channel which is communicated with a discharging pipe of the battery thermal runaway discharging device and the pressure relief opening, and the safety valve is arranged in the channel.

As a preferred scheme of the battery, the outer peripheral surface of the quick connector of the battery thermal runaway discharging device protrudes towards the direction away from the central axis of the quick connector and is provided with a connecting part, the connecting part is positioned at one end of the quick connector away from the discharging pipe of the battery thermal runaway discharging device, and the connecting part is detachably connected with the shell.

As a preferred scheme of the battery, the battery further comprises a second sealing gasket, and the second sealing gasket is clamped between the quick connector and the shell.

The embodiment of the utility model has the beneficial effects that: the quick connector is connected with the discharge pipe through the clamp, so that the discharge pipe is quickly connected with the battery, the disassembly and the assembly are convenient, the time and the labor are saved, the operation efficiency is high, the use of welding equipment or other locking tools is not needed, the cost is saved, and the subsequent discharge pipe can be replaced in a targeted manner after being damaged or the battery is damaged, so that the maintenance cost is reduced; through boss and slot cooperation, be convenient for guide when the drain pipe is connected with quick-operation joint, promote connecting efficiency.

Drawings

The utility model is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic diagram illustrating the cooperation of a battery and a battery thermal runaway device according to an embodiment of the present utility model.

Fig. 2 is an exploded view of a battery and a battery thermal runaway discharging device according to an embodiment of the present utility model.

Fig. 3 is an enlarged schematic view of fig. 2 at a.

Fig. 4 is an exploded view of a thermal runaway discharging device of a battery according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram illustrating the cooperation of the thermal runaway discharging device for a battery according to an embodiment of the present utility model.

In the figure:

1. A battery thermal runaway drain; 11. a discharge pipe; 111. a first side; 112. a slot; 113. a second channel; 114. a surrounding wall; 115. a clamping groove; 1151. a first groove; 1152. a second groove; 12. a quick connector; 121. a second side; 122. a boss; 123. a first channel; 124. a buckle; 125. a connection part; 126. a through hole; 13. a first gasket; 2. a housing; 21. a pressure relief port; 22. a safety valve; 23. a blind hole; 3. and a second gasket.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 3, 4 and 5, the battery thermal runaway discharging device 1 according to the embodiment of the present utility model includes a discharging tube 11 and a quick connector 12, the discharging tube 11 is used for discharging the combustible gas generated by the thermal runaway of the battery, the quick connector 12 is connected with the battery, the discharging tube 11 is connected with a snap 124 of the quick connector 12, the discharging tube 11 has a first side 111, the quick connector 12 has a second side 121, the first side 111 abuts against the second side 121, the second side 121 is convexly provided with a boss 122, the first side 111 is concavely provided with a slot 112, and the boss 122 is spliced with the slot 112. The quick connector 12 is connected with the clamping buckle 124 of the discharge pipe 11, so that the discharge pipe 11 is quickly connected with a battery, the disassembly and the assembly are convenient, the time and the labor are saved, the operation efficiency is high, the use of welding equipment or other locking tools is not needed, the cost is saved, and the subsequent discharge pipe 11 can be replaced in a targeted manner after being damaged or the battery is damaged, so that the maintenance cost is reduced; through boss 122 and slot 112 cooperation, be convenient for guide when discharge pipe 11 is connected with quick-operation joint 12, promote connection efficiency.

In this embodiment, as shown in fig. 4, a first channel 123 is disposed in the quick connector 12, a second channel 113 is disposed in the discharge pipe 11, the first channel 123 is communicated with the second channel 113, the boss 122 is disposed around the periphery of the first channel 123, the slot 112 is disposed around the periphery of the second channel 113, the boss 122 is conveniently inserted into the slot 112 directly, the time of the boss 122 in advance aligning the slot 112 is reduced, and an annular boss 122 structure is adopted, after the insertion is completed, the radial movement of the discharge pipe 11 and the quick connector 12 can be effectively limited, and the connection stability of the discharge pipe 11 and the quick connector 12 is enhanced. Of course, the boss 122 is not limited to be provided in a ring-shaped structure, but may be provided in a two, three or more convex structures provided at intervals at the outer periphery of the first passage 123. In other embodiments, instead of providing annular boss 122 on the outer periphery of first channel 123, providing slot 112 on the outer periphery of second channel 113, boss 122 may be provided between first channel 123 and the outer sidewall of quick coupler 12, providing slot 112 between second channel 113 and the outer sidewall of drain pipe 11, or providing boss 122 around the outer sidewall of quick coupler 12, and providing slot 112 around the outer sidewall of drain pipe 11. Further, the first passage 123 is not limited to being provided in the quick connector 12, the second passage 113 is provided in the discharge pipe 11, the first passage 123 may be provided in the discharge pipe 11, the second passage 113 may be provided in the quick connector 12, that is, the boss 122 may be provided on the second side 121, the slot 112 may be provided on the first side 111, the slot 112 may be provided on the second side 121, and the boss 122 may be provided on the first side 111.

Alternatively, as shown in fig. 5, the boss 122 abuts against the groove wall of the slot 112, and the boss 122 abuts against the groove bottom of the slot 112. Compared with the fact that the discharge pipe 11 is only abutted with the quick connector 12 through the first side face 111 and the second side face 121, the side wall of the boss 122 is abutted with the groove wall of the slot 112 and the top of the boss 122 is abutted with the groove bottom of the slot 112, the joint of the discharge pipe 11 and the quick connector 12 is provided with three contact sealing faces, so that the connection tightness of the quick connector 12 and the discharge pipe 11 is enhanced, namely the fact that the combustible gas at the joint of the first channel 123 and the second channel 113 is not leaked is guaranteed, and the use safety of the discharge device is improved.

Further, as shown in fig. 5, the battery thermal runaway device 1 further includes a first gasket 13, the first gasket 13 being interposed between the first side 111 and the second side 121. By providing the first gasket 13, the connection sealability between the first side 111 and the second side 121 is enhanced, thereby further securing the use safety of the discharge device.

In this embodiment, as shown in fig. 3 and fig. 4, a surrounding wall 114 is annularly disposed on the outer periphery of the first side 111 of the exhaust pipe 11, the quick connector 12 is inserted into the surrounding wall 114, at least two buckles 124 are disposed on the outer periphery of the quick connector 12, a clamping groove 115 for clamping the buckles 124 is disposed on the inner side of the surrounding wall 114, and the clamping groove 115 is clamped with the buckles 124, so that the exhaust pipe 11 is quickly connected with the quick connector 12, the connection of the clamping structure is convenient and stable, and the abutting connection of the boss 122 with the slot 112 is not affected by the arrangement of the surrounding wall 114, that is, the connection tightness of the exhaust pipe 11 and the quick connector 12 is not affected. Preferably, all the buckles 124 are annularly distributed along the outer circumferential surface of the quick connector 12, so that the quick connector 12 is connected with the discharge pipe 11 stably, and the phenomenon of tilting towards one side is avoided. In other embodiments, the clip 124 is not limited to being disposed on the outer peripheral surface of the quick connector 12, the clip groove 115 is disposed on the inner side surface of the surrounding wall 114, and the clip 124 may be disposed on the inner side surface of the surrounding wall 114, and the clip groove 115 may be disposed on the outer peripheral surface of the quick connector 12. Of course, the surrounding wall 114 is not limited to the first side 111, and the surrounding wall 114 may be disposed on the second side 121, that is, the surrounding wall 114 may be disposed on the boss 122.

Further, as shown in fig. 3, the clamping groove 115 includes a first groove 1151 and a second groove 1152, the length of the second groove 1152 extends along the direction perpendicular to the length direction of the drain pipe 11, one end of the first groove 1151 is communicated with the second groove 1152, the other end of the first groove 1151 penetrates through the end surface of the surrounding wall 114, the first groove 1151 and the second groove 1152 are disposed at an included angle, the buckle 124 slides into the second groove 1152 along the first groove 1151, and the buckle 124 is clamped in the second groove 1152, i.e. the outer side walls of the buckle 124 can be respectively in sliding fit with the groove walls of the first groove 1151 and the second groove 1152. When the quick connection is needed, the slot 112 of the discharge pipe 11 is moved to the boss 122 of the quick connector 12 and the buckle 124 is moved to the first groove 1151 under the action of external force, and the buckle 124 is relatively rotated to the discharge pipe 11 when being inserted into the bottom of the first groove 1151, so that the buckle 124 is clamped to the bottom of the second groove 1152, and thus the connection between the discharge pipe 11 and the quick connector 12 is completed, and the connection is convenient and stable. When the disassembly and maintenance are needed, the exhaust pipe 11 is reversely rotated under the action of external force, so that the buckle 124 moves to the notch position along the second groove 1152, and then the buckle 124 is pulled out along the first groove 1151, namely, the separation of the exhaust pipe 11 and the quick connector 12 is completed, the disassembly is convenient, and the maintenance cost is low. Preferably, a section of arc-shaped groove can be provided at the connection between the first groove 1151 and the second groove 1152, so that the transition between the movement of the buckle 124 from the first groove 1151 to the second groove 1152 is facilitated, and the clamping process of the buckle 124 is more relaxed and stable.

The present embodiment also provides a battery, as shown in fig. 1, 2 and 3, including a casing 2 and the battery thermal runaway discharging device 1 applying any of the above embodiments, wherein a pressure relief port 21 is provided on the casing 2, and the battery thermal runaway discharging device 1 communicates with the pressure relief port 21. When the battery is in thermal runaway, the inside of the battery is a high-temperature heat source, and the high-temperature combustible gas in the shell 2 is timely discharged from the battery thermal runaway discharging device 1 through the pressure relief opening 21, so that the contact with the high-temperature heat source and air is avoided, the risk of ignition is reduced, and the safety of the battery is improved.

In this embodiment, as shown in fig. 3, the battery further includes a safety valve 22, the safety valve 22 is disposed at the pressure relief port 21, and safety of the daily battery is ensured by the arrangement of the safety valve 22. Optionally, the quick connector 12 is provided with a first channel 123 communicating the drain pipe 11 and the pressure relief port 21, and the safety valve 22 is disposed in the channel, so that the safety valve 22 is disposed in the quick connector 12 more conveniently than the safety valve 22 is disposed on the housing 2 of the battery, thereby reducing the operation time of operators.

Alternatively, as shown in fig. 3, the outer peripheral surface of the quick connector 12 is provided with a connecting portion 125 protruding in a direction away from the central axis thereof, and the connecting portion 125 is located at one end of the quick connector 12 away from the discharge pipe 11, the connecting portion 125 being detachably connected with the housing 2. Be provided with a plurality of through-holes 126 on connecting portion 125, and a plurality of through-holes 126 are about quick-operation joint 12's central axis annular equipartition setting, correspond through-hole 126 on the casing 2 and seted up blind hole 23, and through-hole 126 is the unthreaded hole, and blind hole 23 is the screw hole, and the bolt passes the unthreaded hole and revolves to screw hole to make connecting portion 125 be connected with casing 2, and it is convenient to connect, and the helicitic texture is connected firmly, is difficult for droing. The detachable design can be used for carrying out targeted replacement when the battery or the battery thermal runaway discharging device 1 is damaged, so that the recycling rate of another undamaged structure is improved, the maintenance cost is reduced, and the practicability of the battery is improved.

Further, the battery also comprises a second sealing gasket 3, and the second sealing gasket 3 is clamped between the quick connector 12 and the shell 2. Through the setting of the second sealing gasket 3 to strengthen the connection leakproofness between quick-operation joint 12 and casing 2, avoid leaking of combustible gas, promote the security of this battery.

In the description herein, it should be understood that the terms "upper," "lower," and the like are used for convenience in description and simplicity of operation only, and are not necessarily indicative or implying any particular orientation, configuration or operation of such apparatus or elements herein, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the term "an embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment 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 embodiment.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. The utility model provides a battery thermal runaway discharging equipment, includes the blast pipe, the blast pipe is used for discharging the produced combustible gas of battery thermal runaway, its characterized in that still includes quick-operation joint, quick-operation joint with the battery is connected, the blast pipe with the quick-operation joint buckle is connected, the blast pipe has first side, quick-operation joint has the second side, first side with second side butt, one of them is provided with the boss of first side with another of second side is provided with the slot in the first side with another of second side, the boss with the slot grafting.

2. The battery thermal runaway drain according to claim 1, wherein one of the drain pipe and the quick connector is provided with a first passage, the other of the drain pipe and the quick connector is provided with a second passage, the first passage communicates with the second passage, the boss is disposed circumferentially along an outer periphery of the first passage, and the slot is disposed circumferentially along an outer periphery of the second passage.

3. The battery thermal runaway drain according to claim 2, wherein the boss abuts a groove wall of the slot; and/or the number of the groups of groups,

The boss is abutted with the bottom of the slot.

4. A battery thermal runaway drain according to claim 3, further comprising a first gasket sandwiched between said first side and said second side.

5. A battery thermal runaway discharging arrangement according to any one of claims 1 to 4, wherein a peripheral wall is provided annularly on the outer periphery of said first side face, said quick connector is inserted into said peripheral wall, at least two buckles are provided on one of the inner side face of said peripheral wall and the outer periphery of said quick connector, and a clamping groove for said buckles to be clamped is provided on the other of the inner side face of said peripheral wall and the outer periphery of said quick connector; or alternatively, the first and second heat exchangers may be,

6. The battery thermal runaway discharging device according to claim 5, wherein a circle of the surrounding wall is annularly arranged on the periphery of the first side face, the clamping groove is formed in the inner side face of the surrounding wall, the clamping groove comprises a first groove and a second groove, the length of the second groove extends along the direction perpendicular to the length direction of the discharging pipe, one end of the first groove is communicated with the second groove, the other end of the first groove penetrates through the end face of the surrounding wall, the first groove and the second groove are arranged in an included angle, and the clamping buckle slides into the second groove along the first groove and is clamped in the second groove.

7. A battery comprising a case and the battery thermal runaway drain according to any one of claims 1 to 6, wherein a pressure relief vent is provided in the case, and the battery thermal runaway drain communicates with the pressure relief vent.

8. The battery of claim 7, wherein the battery further comprises a safety valve;

9. The battery according to claim 7, wherein an outer peripheral surface of the quick connector of the battery thermal runaway discharging device is provided with a connecting portion protruding toward a direction away from a central axis thereof, and the connecting portion is located at an end of the quick connector away from a discharging pipe of the battery thermal runaway discharging device, the connecting portion being detachably connected with the housing.

10. The battery of claim 9, further comprising a second gasket, wherein the second gasket is sandwiched between the quick connector and the housing.