CN220984774U - Battery exhaust device, hard shell battery and soft package battery - Google Patents

Abstract

The utility model discloses a battery exhaust device, a hard shell battery and a soft package battery, and relates to the field of batteries. The battery exhaust device comprises a valve body, a plugging piece and an elastic piece, wherein the valve body is provided with an exhaust channel, the exhaust channel is provided with an air inlet and an air outlet, and the valve body is used for being connected with a battery packaging piece so as to enable the air inlet to be communicated with a battery core cavity enclosed by the battery packaging piece; the blocking piece is connected with the valve body through the elastic piece, and the blocking piece is used for blocking the air outlet under the action of tensile elastic force of the elastic piece, and is used for releasing blocking of the air outlet when the tensile elastic force is smaller than the gas pressure generated by the electric core cavity, so that the electric core cavity is communicated with the outside through the exhaust channel. The battery exhaust device provided by the utility model can exhaust the gas in the battery without damaging the battery and does not influence the normal use of the battery.

Description

Battery exhaust device, hard shell battery and soft package battery

Technical Field

The utility model relates to the field of batteries, in particular to a battery exhaust device, a hard shell battery and a soft package battery.

Background

With the increase of the service time of the battery, various side reactions such as electrolyte decomposition and the like can cause gas generation in the battery, so that the internal pressure of the battery is increased, and safety problems can be caused after the internal pressure of the battery is increased to a certain degree, so that the gas in the battery needs to be discharged.

At present, the method mainly adopted for discharging the gas in the battery in the market is to destroy the explosion-proof valve, and the destruction of the explosion-proof valve leads to the failure of the battery and can not be used again.

Disclosure of utility model

The utility model aims to provide a battery exhaust device which can exhaust gas in a battery without damaging the battery and does not influence the normal use of the battery.

Another object of the present utility model is to provide a hard-case battery capable of discharging internal gas without affecting normal use.

It is still another object of the present utility model to provide a pouch battery capable of discharging internal gas without affecting normal use.

The embodiment of the utility model provides a technical scheme that:

The battery exhaust device comprises a valve body, a plugging piece and an elastic piece, wherein the valve body is provided with an exhaust channel, the exhaust channel is provided with an air inlet and an air outlet, and the valve body is used for being connected with a battery packaging piece so as to enable the air inlet to be communicated with a battery core cavity enclosed by the battery packaging piece;

The blocking piece is connected with the valve body through the elastic piece, and the blocking piece is used for blocking the air outlet under the action of tensile elastic force of the elastic piece.

Further, the valve core and the valve shell are provided with a first accommodating cavity, a first opening and a second opening which are communicated with the first accommodating cavity; the valve core is arranged in the first accommodating cavity; the valve core is provided with a first end and a second end which are oppositely arranged; a second end of the valve spool seals the second opening; the air inlet is arranged at the second end of the valve core; the air outlet is arranged at the first end of the valve core; the exhaust passage is provided in the valve element.

Further, the valve core, the valve housing and the valve cover are integrally formed.

Further, the valve cartridge includes a cartridge housing having an air outlet and a third opening, and a valve cover sealing the second opening and sealing the third opening; the air inlet is arranged on the valve cover; the exhaust passage is formed between the valve cover and the core housing.

Further, the blocking piece and the elastic piece are both arranged in the first accommodating cavity.

Further, the center line of the first opening is parallel to the center line of the air outlet; a plurality of limiting parts are arranged on the cavity wall of the first accommodating cavity at intervals along the circumferential direction, wherein the limiting parts are positioned between the air outlet and the first opening; and the orthographic projection of the limiting part on the projection surface is intersected with the orthographic projection of the plugging piece on the projection surface, wherein the projection surface is perpendicular to the central line of the first opening.

Further, the first opening is covered with a breathable film.

The embodiment of the utility model also provides a hard shell battery, which comprises a shell made of metal materials, a battery core and the battery exhaust device, wherein the shell is provided with a battery core cavity, and the battery core and the battery exhaust device are both accommodated in the battery core cavity; the valve body is connected with the shell; the air inlet is communicated with the electric core cavity, the shell is provided with a first air outlet, and the air outlet is communicated with the first air outlet in a state that the blocking piece releases blocking of the air outlet.

The embodiment of the utility model also provides a soft package battery, which comprises an aluminum plastic film, a battery core and the battery exhaust device, wherein the aluminum plastic film covers the battery core and encloses a battery core cavity, the battery exhaust device is positioned outside the aluminum plastic film, the valve body is connected with the aluminum plastic film, a second exhaust port is formed in the aluminum plastic film, and the battery core cavity is communicated with the air inlet through the second exhaust port.

Further, the aluminum plastic film packaging device also comprises a mounting seat, wherein the mounting seat is arranged at a second air outlet of the aluminum plastic film, and a transition channel communicated with the second air outlet is arranged on the mounting seat in a penetrating manner; the valve body is connected with the aluminum-plastic film through the mounting seat; the air inlet is communicated with the second air outlet through the transition passage.

Compared with the prior art, in practical application, the battery cell is accommodated in the battery cell cavity surrounded by the battery packaging piece, and when gas pressure applied to the blocking piece exceeds the action of stretching elastic force applied by the elastic piece after gas generated in the battery cell cavity is accumulated to a certain extent, the blocking piece can release blocking of the gas outlet, so that the battery cell cavity is communicated with the outside through the gas exhaust channel, and the gas in the battery cell cavity can be smoothly exhausted to the outside through the gas exhaust channel. After the exhaust is completed, the gas pressure is smaller than the action of tensile elasticity, and the elastic piece drives the plugging piece to plug the exhaust channel again, so that the normal use of the battery is ensured. Therefore, the battery exhaust device provided by the utility model has the beneficial effects that: the internal gas of the battery can be discharged without damaging the battery, and the normal use of the battery is not affected.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described. It is appreciated that the following drawings depict only certain embodiments of the utility model and are therefore not to be considered limiting of its scope. Other relevant drawings may be made by those of ordinary skill in the art without undue burden from these drawings.

Fig. 1 is a schematic structural view of a hard-shell battery according to a first embodiment of the present utility model;

FIG. 2 is an exploded view of the battery vent of FIG. 1;

Fig. 3 is a schematic structural diagram of a soft package battery according to a second embodiment of the present utility model;

fig. 4 is an exploded view of the battery vent apparatus of fig. 3.

Icon: 10-hard shell battery; 11-a housing; 20-soft package battery; 21-an aluminum plastic film; 22-mounting seats; 30-cell chamber; 100-battery exhaust; 110-valve body; 111-an exhaust passage; 1111-inlet; 1112-an air outlet; 112-valve core; 1121-a third opening; 113-a valve housing; 114-a first receiving cavity; 1141-a first opening; 1142-a second opening; 115-valve cover; 116-a limiting part; 120-a closure; 121-a plug-in component; 1211-an exhaust sub-passage; 122-stop plate; 1221-rupture disc; 130-an elastic member; 140-breathable film.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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 be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The following describes specific embodiments of the present utility model in detail with reference to the drawings.

First embodiment

Referring to fig. 1, fig. 1 is a schematic diagram of a hard-shell battery 10.

The hard-shell battery 10 provided in this embodiment includes a battery exhaust device 100, a housing 11 and a battery cell, the housing 11 is a battery package of the hard-shell battery 10, the housing 11 encloses a battery cell chamber 30, the battery exhaust device 100 and the battery cell are both accommodated in the battery cell chamber 30, and the battery exhaust device 100 is connected with the housing 11. The battery exhaust device 100 is used to communicate the cell chamber 30 with the outside when the pressure of the gas generated in the cell chamber 30 is excessively high, thereby exhausting the gas in the cell chamber 30 to the outside.

Referring to fig. 2 in combination, fig. 2 is an exploded view of the battery exhaust apparatus 100 according to the present embodiment.

The battery exhaust device 100 comprises a valve body 110, a blocking piece 120 and an elastic piece 130, wherein the valve body 110 is connected with a shell 11, the valve body 110 is provided with an exhaust channel 111, the exhaust channel 111 is provided with an air inlet 1111 and an air outlet 1112, the air inlet 1111 is communicated with the battery cell chamber 30, and the shell 11 is provided with a first air outlet. The blocking piece 120 is connected with the valve body 110 through the elastic piece 130, the blocking piece 120 blocks the air outlet 1112 under the tensile elastic force of the elastic piece 130, and the blocking piece 120 is used for releasing the blocking of the air outlet 1112 when the tensile elastic force is smaller than the air pressure generated by the electric core chamber 30, so that the electric core chamber 30 is communicated with the first air outlet through the air outlet channel 111.

In the initial state, the elastic member 130 is in an extended state, and a tensile elastic force is continuously applied to the blocking member 120, so that the blocking member 120 maintains blocking of the air outlet 1112 of the air outlet channel 111. Over time, gas may gradually accumulate within the cell chamber 30, resulting in a gradual increase in the gas pressure within the cell chamber 30. When the gas pressure acting on the blocking member 120 exceeds the tensile elastic force applied by the elastic member 130, the blocking member 120 unblocks the gas outlet 1112, and the elastic member 130 is further elongated. In this state, the gas in the cell chamber 30 is discharged to the outside through the exhaust passage 111 and the first exhaust port.

After the exhaust is completed, the air pressure in the electric core chamber 30 is reduced, and the air pressure acting on the blocking piece 120 is smaller than the restoring force of the elastic piece 130, so that the elastic piece 130 drives the blocking piece 120 to reset, the air outlet 1112 is re-blocked, the electric core chamber 30 is not communicated with the first air outlet, and the hard shell battery 10 is ensured to be normally used. It should be noted that, in order to ensure that the plugging member 120 can be smoothly reset, a guiding structure may be added, for example, the guiding structure is a sliding block and chute structure, and the plugging member 120 and the valve body 110 are connected in a sliding fit manner through a sliding block and a chute.

As can be seen, the hard-shell battery 10 provided in this embodiment has the battery exhaust device 100 capable of exhausting the internal gas without damaging the casing 11, and the normal use of the hard-shell battery 10 is not affected.

In some implementations, the valve body 110 includes a valve core 112 and a valve housing 113, the valve housing 113 having a first receiving cavity 114 and a first opening 1141, a second opening 1142 in communication with the first receiving cavity 114; the valve core 112 is disposed in the first accommodating chamber 114; the spool 112 has oppositely disposed first and second ends; a second end of the spool 112 seals the second opening 1142; an air inlet 1111 is provided at a second end of the valve core 112; the air outlet 1112 is disposed at a first end of the valve core 112; an exhaust passage 111 is provided in the spool 112.

In this embodiment, the valve body 110 is accommodated in the core chamber 30, and the first opening 1141 is connected to the first exhaust port on the housing 11. The valve core 112 and the blocking piece 120 jointly block the first accommodating cavity 114, so that the electric core cavity 30 is not communicated with the first exhaust port.

It should be noted that, the second end of the valve element 112 may seal the second opening 1142 by integrally forming the valve element 112 and the valve housing 113; the valve element 112 and the valve housing 113 may be screw-coupled, snap-fit, or welded.

It is understood that the air outlet 1112 may be disposed in the first accommodating cavity 114 or may be disposed outside the first accommodating cavity 114, where the blocking member 120 cannot block the first opening 1141 all the time during the air exhaust process when the air outlet 1112 is disposed in the first accommodating cavity 114.

Further described with respect to the valve cartridge 112, the valve cartridge 112 includes a cartridge housing having an air outlet 1112 and a third opening 1121, and a valve cap 115 sealing the second opening 1142, and the valve cap 115 sealing the third opening 1121; the air inlet 1111 is provided at the valve cover 115; an exhaust passage 111 is formed between the valve cover 115 and the core case.

It should be noted that, the valve cover 115 seals the second opening 1142, and the valve cover 115 seals the third opening 1121 may be formed by integrally molding the valve cover 115, the core shell, and the valve housing 113; the valve cover 115 and the core shell are integrally formed, and the valve cover 115 and the valve shell 113 are in threaded connection type sealing connection or clamping type density or welding type sealing; the valve cover 115, the core housing and the valve housing 113 may be screw-coupled, snap-fit, or welded.

Further describing the elastic member 130, an annular clamping cavity is formed between the outer side wall of the valve core 112 and the inner side wall of the valve housing 113, and the elastic member 130 is accommodated in the annular clamping cavity; the end of the elastic member 130 remote from the blocking member 120 is connected to the valve core 112. In this embodiment, the elastic member 130 is a spring, and the elastic member 130 expands and contracts in the annular clamping cavity before and after the process of exhausting the gas in the cell chamber 30.

In other embodiments, the elastic member 130 may be selected according to practical application conditions, and the connection structure between the elastic member 130 and the valve housing 113 may be adjusted according to practical application conditions. For example, in another embodiment, the end of the elastic member 130 remote from the blocking member 120 may be further connected to the inner sidewall of the first opening 1141 of the valve housing 113, in which case the elastic member 130 is in a contracted state, and applies a continuous pushing force to the blocking member 120, so that the blocking member 120 maintains blocking the air outlet 1112.

In some embodiments, the valve core 112, the blocking member 120 and the elastic member 130 are all accommodated in the first accommodating cavity 114, the air outlet 1112 of the air exhaust channel 111 is communicated with the first accommodating cavity 114, one end of the elastic member 130 is connected with the blocking member 120, the other end is connected with the valve core 112, and the valve housing 113 is connected with the housing 11.

In some embodiments, the battery vent 100 further includes a gas permeable membrane 140, the gas permeable membrane 140 sealing the first opening 1141, and the first receiving chamber 114 communicates with the outside through the gas permeable membrane 140.

It is understood that the ventilation film 140 can prevent external dust, insects, etc. from entering the first accommodating chamber 114. It can be appreciated that the valve core 112, the blocking member 120 and the elastic member 130 are all accommodated in the first accommodating cavity 114, and when the blocking member 120 is propped open by the gas, the gas in the core cavity 30 enters the first accommodating cavity 114 through the exhaust channel 111 and can be smoothly discharged into the outside through the ventilation membrane 140, so as to complete the air discharge and pressure relief.

Further, in order to avoid the blocking member 120 bursting the ventilation film 140 during the ventilation, in this embodiment, the center line of the first opening 1141 is parallel to the center line of the air outlet 1112; a plurality of limiting parts 116 are arranged on the cavity wall of the first accommodating cavity 114 at intervals along the circumferential direction, wherein the limiting parts 116 are positioned between the air outlet 1112 and the first opening 1141; and the orthographic projection of the limiting part 116 on the projection plane intersects with the orthographic projection of the plugging piece 120 on the projection plane, wherein the projection plane is perpendicular to the central line of the first opening 1141.

In order to prevent the air pressure in the core chamber 30 from rapidly rising in a short time, the blocking member 120 is subjected to the air pressure to burst the air permeable membrane 140 at the first opening 1141 of the valve housing 113, in this embodiment, a plurality of limiting portions 116 are disposed on the wall of the first accommodating chamber 114 at intervals along the circumferential direction, so as to stop the blocking member 120 from reaching the first opening 1141.

Further describing the plugging member 120, the plugging member 120 includes a plug member 121 and a stop plate 122, the plug member 121 is convexly disposed on one side of the stop plate 122, the plug member 121 is plugged with the air outlet 1112, the stop plate 122 is circumferentially abutted against the end surface of the valve core 112, and the stop plate 122 is connected with the elastic member 130.

It can be appreciated that the plug connector 121 is inserted into the air outlet 1112, and the side wall of the air outlet 1112 realizes the limit of the plugging member 120, so as to prevent the plugging member 120 from sliding on the end wall of the air outlet 1112 under the action of external force to cause the plugging failure. The stopper 122 circumferentially abuts against the end surface of the valve core 112, and ensures reliable sealing of the air outlet 1112. In other embodiments, to further enhance the tightness of the air outlet 1112 in the plugged state, a gasket may be provided between the stop plate 122 and the end face of the valve core 112.

Considering that in the case where the gas in the cell chamber 30 increases rapidly in a short time, although the blocking member 120 exits the gas outlet 1112, the gas can flow out of the gas outlet 1112, the blocking member 120 is still in the path of the gas flowing out, and a certain barrier is caused to the gas discharge, so that the gas discharge speed is affected, and in the case where the gas increasing speed in the cell chamber 30 is too fast, a safety accident may be caused due to untimely gas discharge.

To solve this problem, in the present embodiment, the plug 121 encloses an exhaust sub-channel 1211, one end of the exhaust sub-channel 1211 extends into the air outlet 1112 to communicate with the exhaust channel 111, the other end of the exhaust sub-channel 1211 extends to the stop plate 122, and the area of the stop plate 122 corresponding to the exhaust sub-channel 1211 is provided with an explosion-proof piece 1221.

In practical application, when the gas in the core chamber 30 increases rapidly in a short time, besides the blocking piece 120 is flushed, the gas flow enters the exhaust sub-channel 1211 surrounded by the blocking piece 120 and flushes the explosion-proof sheet 1221 on the stop plate 122, and the gas flow can directly pass through the blocking piece 120 and flow out from the first exhaust port of the housing 11 through the first accommodating chamber 114 and the first opening 1141, so that the blocking effect of the blocking piece 120 on the gas flow is reduced, and the exhaust efficiency is significantly improved.

In summary, the battery exhaust device 100 of the hard-shell battery 10 provided in the present embodiment can exhaust internal gas without damaging the hard-shell battery 10, and does not affect the normal use of the hard-shell battery 10. Therefore, the hard-shell battery 10 provided in the present embodiment can exhaust the internal gas without affecting the normal use.

Second embodiment

Referring to fig. 3, fig. 3 is a schematic diagram of a soft pack battery 20.

The soft package battery 20 provided in this embodiment includes a battery exhaust device 100, an aluminum plastic film 21 and a battery cell, wherein the aluminum plastic film 21 is a battery package of the soft package battery 20, and the aluminum plastic film 21 wraps the battery cell and encloses a battery cell chamber 30. The battery exhaust device 100 is located outside the plastic-aluminum film 21 and connected with the plastic-aluminum film 21, and a second exhaust port is formed in the plastic-aluminum film 21, and the battery exhaust device 100 is used for communicating the second exhaust port with the outside when the gas pressure generated in the cell chamber 30 is too high, so that the gas in the cell chamber 30 is exhausted to the outside.

Referring to fig. 4 in combination, fig. 4 is an exploded view of the battery exhaust apparatus 100 according to the present embodiment.

Compared to the first embodiment, the battery exhaust apparatus 100 has substantially the same structure, except that the inner sidewall of the valve housing 113 is further provided with a mounting portion, the mounting portion is located at the second opening 1142, the soft package battery 20 further includes a mounting seat 22, the mounting seat 22 is disposed on the plastic-aluminum film 21, and the mounting portion cooperates with the mounting seat 22 to mount the battery exhaust apparatus 100 on the plastic-aluminum film 21.

Specifically, the mounting seat 22 is provided with a transition channel communicated with the second exhaust port in a penetrating manner, and the transition channel extends into the air inlet 1111 and is communicated with the second exhaust port, i.e. the air inlet 1111 is communicated with the second exhaust port through the transition channel. In this embodiment, the mounting portion is an internal thread formed around the inner wall of the valve housing 113, and the mounting seat 22 is provided with an external thread engaged with the internal thread. That is, during the actual assembly process, the mounting seat 22 is relatively screwed into the second opening 1142, so that the second exhaust port and the intake port 1111 can be communicated.

Therefore, the battery pack 20 provided in this embodiment has the battery exhaust device 100 capable of exhausting internal gas without damaging the battery pack 20, and without affecting the normal use of the battery pack 20. Therefore, the pouch cell 20 provided in the present embodiment can discharge the internal gas without affecting the normal use. And, compare in the prior art of external gasbag can make things convenient for soft packet of battery 20 to do the test more, compare in the prior art that disposes bulky plastic-aluminum membrane 21 in order to realize inside gas of accomodating, can practice thrift plastic-aluminum membrane 21, and the risk that plastic-aluminum membrane 21 was propped and exploded is arranged.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A battery exhaust device, characterized by comprising a valve body (110), a blocking piece (120) and an elastic piece (130), wherein the valve body (110) is provided with an exhaust channel (111), the exhaust channel (111) is provided with an air inlet (1111) and an air outlet (1112), and the valve body (110) is used for being connected with a battery packaging piece so that the air inlet (1111) is communicated with a battery core cavity (30) enclosed by the battery packaging piece;

The blocking piece (120) is connected with the valve body (110) through the elastic piece (130), and the blocking piece (120) blocks the air outlet (1112) under the action of the stretching elasticity of the elastic piece (130).

2. The battery vent according to claim 1, wherein the valve body (110) includes a valve spool (112) and a valve housing (113), the valve housing (113) having a first receiving chamber (114) and a first opening (1141), a second opening (1142) in communication with the first receiving chamber (114); the valve core (112) is arranged in the first accommodating cavity (114); the spool (112) has oppositely disposed first and second ends; a second end of the spool (112) seals the second opening (1142); the air inlet (1111) is arranged at the second end of the valve core (112); the air outlet (1112) is arranged at the first end of the valve core (112); the exhaust passage (111) is provided in the valve element (112).

3. The battery vent apparatus of claim 2, wherein the valve core (112) and the valve housing (113) are integrally formed.

4. The battery vent apparatus of claim 2, wherein the valve cartridge (112) comprises a cartridge housing and a valve cover (115), the cartridge housing having an air outlet (1112) and a third opening (1121), the valve cover (115) sealing the second opening (1142), and the valve cover (115) sealing the third opening (1121); the air inlet (1111) is arranged on the valve cover (115); the exhaust passage (111) is formed between the valve cover (115) and the core case.

5. The battery venting device of claim 2 or 3 or 4, wherein the blocking member (120) and the elastic member (130) are both disposed within the first receiving chamber (114).

6. The battery exhaust apparatus of claim 5, wherein a center line of the first opening (1141) and a center line of the air outlet (1112) are parallel to each other; a plurality of limiting parts (116) are arranged on the cavity wall of the first accommodating cavity (114) at intervals along the circumferential direction, wherein the limiting parts (116) are positioned between the air outlet (1112) and the first opening (1141); and the orthographic projection of the limiting part (116) on a projection plane is intersected with the orthographic projection of the plugging piece (120) on the projection plane, wherein the projection plane is perpendicular to the central line of the first opening (1141).

7. The battery vent of claim 5, wherein the first opening is covered with a gas permeable membrane (140).

8. A hard-shell battery, characterized by comprising a housing (11) made of a metal material, a battery cell and a battery exhaust device (100) according to any one of claims 1-7, wherein the housing (11) is provided with a battery cell chamber (30), and the battery cell and the battery exhaust device (100) are both accommodated in the battery cell chamber (30); the valve body (110) is connected with the shell (11); the air inlet (1111) is communicated with the electric core chamber (30), the shell (11) is provided with a first air outlet, and the air outlet (1112) is communicated with the first air outlet in a state that the blocking piece (120) releases blocking of the air outlet (1112).

9. The flexible package battery is characterized by comprising an aluminum plastic film (21), a battery core and the battery exhaust device (100) according to any one of claims 1-7, wherein the battery core is covered by the aluminum plastic film (21) and is surrounded by the aluminum plastic film (21) to form a battery core cavity (30), the battery exhaust device (100) is positioned outside the aluminum plastic film (21), the valve body (110) is connected with the aluminum plastic film (21), a second exhaust port is formed in the aluminum plastic film (21), and the battery core cavity (30) is communicated with the air inlet (1111) through the second exhaust port.

10. The flexible battery according to claim 9, further comprising a mounting seat (22), wherein the mounting seat (22) is arranged at a second exhaust port of the aluminum plastic film (21), and a transition channel communicated with the second exhaust port is arranged on the mounting seat (22) in a penetrating manner; the valve body (110) is connected with the aluminum plastic film (21) through the mounting seat (22); the intake port (1111) communicates with the second exhaust port through the transition passage.