CN216958204U

CN216958204U - Box and battery

Info

Publication number: CN216958204U
Application number: CN202123454312.4U
Authority: CN
Inventors: 田士博; 荆振洋; 孙丰涛; 时高龙
Original assignee: Zhuhai Gree Titanium Electric Appliance Co ltd; Gree Altairnano New Energy Inc
Current assignee: Zhuhai Gree Titanium Electric Appliance Co ltd; Gree Altairnano New Energy Inc
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-12
Anticipated expiration: 2031-12-31

Abstract

The application relates to the technical field of batteries in general, and in particular relates to a box body and a battery, wherein the battery is provided with the box body, the box body comprises a bottom plate, at least one heat exchange flow channel is coiled in the bottom plate, and the bottom of the bottom plate is provided with a liquid inlet and a liquid outlet which are communicated with the heat exchange flow channel, a lower liquid inlet and a lower liquid outlet structure are adopted, when the cooling pump is stopped, the cooling liquid in the bottom plate can have an outlet to return to the liquid storage tank under the action of gravity, so as to ensure that no residual liquid is left in the bottom plate, and then the risk that the cold drawing is corroded or liquid leaks is reduced, the distance between the liquid inlet and the center of the bottom plate is smaller than the distance between the liquid outlet and the center of the bottom plate, cooling liquid flows towards the edge of the bottom plate from the position close to the center of the bottom plate in the heat exchange flow channel, the heat distribution of the battery cell in the box body is diffused from the center to the periphery, the heat exchange flow channel is distributed along the temperature gradient, and the heat exchange uniformity is improved.

Description

Box and battery

Technical Field

The present application generally relates to the field of battery technology, and more particularly, to a case and a battery.

Background

In the manufacturing and production process of the lithium ion battery, the square battery is widely applied to the fields of battery energy storage, power batteries and the like due to the advantages of easiness in assembly and fixation, flexible design and the like. At this time, it is often necessary to connect the batteries in series and parallel to form a battery module, and then to form a battery box by several modules.

The module is in airtight space in the case, and battery cell in the operation, the electrochemical reaction takes place, and along with a large amount of heat productions, the heat constantly gathers, causes battery cell high temperature samming effect poor to lead to reporting an emergency and asking for help or increased vigilance, unable normal work leads to the battery life to subtract the weak point, takes place thermal runaway even, brings very big potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In order to solve the technical problem that the battery in the existing box is high in working temperature and affects the service life and the use safety of the battery, the application provides a box and a battery.

In order to realize the purpose of the utility model, the following technical scheme is adopted in the application:

a cabinet, comprising:

the bottom plate is internally coiled with at least one heat exchange flow channel, and the bottom of the bottom plate is provided with a liquid inlet and a liquid outlet which are communicated with the heat exchange flow channel;

wherein, the distance between the liquid inlet and the center of the bottom plate is less than the distance between the liquid outlet and the center of the bottom plate.

Further, in some embodiments of the present disclosure, the heat exchanging flow channel has a winding center near the center of the bottom plate.

Further, in some embodiments of this application scheme, above-mentioned heat transfer runner is provided with many, many the heat transfer runner is located same horizontal plane, at least two the heat transfer runner is from coiling center and extending back inflection coiling setting after opposite direction.

Further, in some embodiments of the present disclosure, the liquid inlet is communicated with a coiling center of the heat exchange flow channel.

Further, in some embodiments of this application scheme, above-mentioned bottom plate is equipped with many heat transfer runners, the bottom plate corresponds each heat transfer runner and has seted up respectively the inlet, it is a plurality of the heat transfer runner respectively with the liquid outlet intercommunication.

Further, in some embodiments of the present application, a liquid outlet channel is further disposed in the bottom plate, and the plurality of heat exchange channels and the liquid outlet are respectively communicated with the liquid outlet channel.

Further, in some embodiments of the present application, the box further includes a liquid inlet joint and a liquid outlet joint, the liquid inlet joint is provided with a main circulation pipe and a branch circulation pipe for communicating with the liquid inlet, and the branch circulation pipe communicates with the main circulation pipe;

the liquid outlet joint is connected with the liquid outlet.

Further, in some embodiments of the present disclosure, the number of the flow branch pipes is multiple, each of the flow branch pipes is connected to the same horizontal position of the flow main pipe, and the diameters of the flow branch pipes are the same.

Further, in some embodiments of the present disclosure, the liquid inlet joint is further provided with a liquid inlet valve, and the liquid inlet valve is installed in the main circulation pipe;

the liquid outlet joint is provided with a liquid outlet valve.

A battery is provided with the box body.

According to the technical scheme, the box body has the advantages that:

this application scheme provides a box and battery, and this box is installed to the battery, and the box includes the bottom plate, coils in the bottom plate to be equipped with an at least heat transfer runner, just the bottom of bottom plate seted up with inlet and the liquid outlet of heat transfer runner intercommunication, the feed liquor under the cold adoption, lower liquid structure, when the cooling pump shut down, the cooling liquid can have the liquid outlet to return the liquid storage pot under the action of gravity in the bottom plate, guarantees not have in the bottom plate to remain liquid, and then has reduced the risk that the bottom plate is corroded or liquid leakage, the inlet with the distance of bottom plate center department is less than the liquid outlet with the distance at bottom plate center, the cooling liquid is from being close to bottom plate center department in the heat transfer runner and flowing towards the bottom plate edge, and electric core thermal distribution is dispersed around by the center in the box, and the cooling liquid is located the low temperature department of flow direction box from the high temperature of box, improves the heat transfer homogeneity.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic diagram of a battery assembly according to an exemplary embodiment.

FIG. 2 is a schematic diagram illustrating a water inlet interface of a tank, according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating a heat exchange flow passage of a case being coiled according to an exemplary embodiment.

Wherein the reference numerals are as follows:

100-a box body; 200-a cell module;

110-a base plate; 120-box cover; 130-a heat exchange flow channel; 140-a liquid inlet; 150-a liquid outlet; 160-liquid outlet flow channel; 170-liquid inlet joint; 180-liquid outlet joint;

171-flow-through main; 172-flow-through legs; 173-a liquid inlet valve;

181-a liquid outlet pipe; 182-liquid outlet valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application are within the scope of the present application without inventive efforts, and therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention but only to represent selected embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the manufacturing and production process of the lithium ion battery, the square battery is widely applied to the fields of battery energy storage, power batteries and the like due to the advantages of easiness in assembly and fixation, flexible design and the like. In this case, batteries are often connected in series and parallel to form a battery module, and several battery modules are often assembled into a battery box. The case centre form group is in airtight space, and battery cell is in the work operation, takes place electrochemical reaction, and along with a large amount of heat productions, the heat constantly gathers, and it is poor to cause the too high samming effect of battery cell temperature to lead to reporting an emergency and asking for help or increased vigilance, unable normal work leads to the battery life to subtract the weak point, takes place thermal runaway even, brings very big potential safety hazard. In order to solve the technical problem that the working temperature of a battery in the existing box is high, the service life of the battery is influenced, and the use safety of the battery is influenced, the application provides a box and the battery.

The battery is provided with the box body 100, the box body 100 comprises the bottom plate 110, at least one heat exchange flow channel 130 is coiled in the bottom plate 110, and the bottom of the bottom plate 110 is provided with a liquid inlet 140 and a liquid outlet 150 communicated with the heat exchange flow channel 130, and a lower liquid inlet and outlet structure is adopted, when the cooling pump is stopped, the cooling liquid in the bottom plate 110 can have an outlet to return to the liquid storage tank under the action of gravity, so as to ensure that no residual liquid exists in the bottom plate 110, further, the risk of corrosion of the cold plate or liquid leakage is reduced, the distance between the liquid inlet 140 and the center of the bottom plate 110 is smaller than the distance between the liquid outlet 150 and the center of the bottom plate 110, the cooling liquid flows from a position close to the center of the bottom plate 110 toward the edge of the bottom plate 110 in the heat exchange flow channel 130, the heat distribution of the battery cells in the box body 100 is diffused from the center to the periphery, the heat exchange flow channel 130 is distributed along a temperature gradient, and the heat exchange uniformity is improved.

Fig. 1 is a schematic view illustrating a battery assembly according to an exemplary embodiment, fig. 2 is a schematic view illustrating a water inlet port of a case 100 according to an exemplary embodiment, and fig. 3 is a schematic view illustrating a heat exchange flow passage 130 of the case 100 coiled according to an exemplary embodiment.

The utility model provides a box 100 and battery, battery include electric core module 200 and this box 100, and electric core module 200 is installed in box 100, and box 100 includes case lid 120 and case box, and box 100 is preferred to be the cuboid structure, and the case box has bottom plate 110 and connect with four curb plates of bottom plate 110, the installation of the square electric core module 200 of being convenient for is fixed.

Electric core module 200 installs in box 100 back, is in airtight space in box 100, and the battery cell is in the work operation, takes place electrochemical reaction, and along with a large amount of heat productions, the heat constantly gathers, causes the too high samming effect of battery cell temperature poor, leads to the battery life to subtract the weak point to have very big potential safety hazard, consequently, need cool off the battery module.

In the specific example, bottom plate 110 is inside to coil and is provided with heat transfer runner 130, lets in the coolant liquid in heat transfer runner 130, and the heat of electric core module 200 bottom can be absorbed to the coolant liquid, reduces box 100 internal temperature to play the effect to the cooling of electric core module 200, further, heat transfer runner 130 coil set up in bottom plate 110 improves the homogeneity to cooling in the box 100.

The bottom of the bottom plate 110 is provided with a liquid inlet 140 and a liquid outlet 150 which are communicated with the heat exchange flow channel 130, a lower liquid inlet and lower liquid outlet structure is adopted, when the cooling pump is stopped, the cooling liquid in the bottom plate 110 can return to the liquid storage tank through the liquid outlet 150 under the action of gravity, so that no residual liquid is left in the bottom plate 110, and the risk of corrosion or liquid leakage of the bottom plate 110 is reduced.

Preferably, the upper surface and the lower surface of the base plate 110 are disposed in parallel, and the plane in which the heat exchange flow channel 130 is located is parallel to the upper surface or the lower surface of the base plate 110.

One, two or more heat exchange flow channels 130 may be disposed in the base plate 110, as will be understood by those skilled in the art.

The distance between the liquid inlet 140 and the center of the bottom plate 110 is smaller than the distance between the liquid outlet 150 and the center of the bottom plate 110, so that the cooling liquid flows from the position close to the center of the bottom plate 110 toward the edge of the bottom plate 110 in the heat exchange flow channel 130, the heat distribution of the battery cell modules in the box body 100 is diffused from the center to the periphery, the cooling liquid flows from the high-temperature position of the box body 100 to the low-temperature position of the box body 100, and the heat exchange uniformity is improved.

The heat exchange flow channel 130 can be coiled in a rectangular shape or in a circular shape, and when the heat exchange flow channel 130 is coiled in a circular spiral shape and the cooling liquid flows in the heat exchange flow channel 130, the curvature of the heat exchange flow channel 130 flowing through is gradually reduced, the centrifugal force is reduced, and the resistance is reduced, so that the resistance distribution of the heat exchange flow channel 130 meets the heat distribution characteristic, and the battery cell module 200 is uniformly cooled.

Referring to fig. 3, the coiling center of the heat exchange channel 130 is close to the center of the bottom plate 110, preferably, the center of the heat exchange channel 130 is located at the center of the bottom plate 110, the starting end of the heat exchange channel 130 is located at the center of the bottom plate 110, and the liquid inlet 140 is communicated with the starting end of the heat exchange channel 130.

Because the central part of the box body 100 has poor air circulation and bad heat dissipation conditions, local hot spots are generated, the hot spots of the box body 100 are provided with the liquid inlet 140 for replacing the hot runner 130, so that the cooling liquid with lower temperature firstly exchanges heat with the high-temperature part in the box body 100, the heat exchange temperature difference can be improved, and the locally generated hot spots are eliminated to the maximum extent.

When the heat exchange flow channels 130 are provided with a plurality of heat exchange flow channels 130, the heat exchange flow channels 130 are located on the same horizontal plane, at least two heat exchange flow channels 130 extend from the coiling center towards opposite directions, and are folded and coiled after extending for a certain distance, so that the area around the center of the bottom plate 110 can be uniformly cooled.

In the embodiment of the present application, as shown in fig. 3 for example, the bottom plate 110 is provided with four heat exchange flow channels 130, the four heat exchange flow channels 130 are coiled in a rectangular shape, two of the four heat exchange flow channels 130 extend from the center of the bottom plate 110 to the first direction and are folded back and coiled, the other two of the four heat exchange flow channels 130 extend from the center of the bottom plate 110 to the second direction and are folded back and coiled, the first direction and the second direction face opposite directions, and the two heat exchange flow channels 130 extending from the center of the bottom plate 110 to the same direction are communicated at the folded back, so as to improve uniformity of heat exchange.

The bottom plate 110 is provided with a liquid inlet 140 for each of the plurality of heat exchange flow channels 130, and the liquid outlet 150 is communicated with each of the heat exchange flow channels 130, in the present embodiment, the liquid inlet 140 is connected to a liquid inlet joint 170, and the liquid outlet 150 is connected to a liquid outlet joint 180.

In a specific example, the liquid outlet channel 160 is disposed in the bottom plate 110, the liquid outlet channel 160 is disposed near an edge of the bottom plate 110, ends of the plurality of heat exchange channels 130 are respectively communicated with the liquid outlet channel 160, and the bottom plate 110 is provided with a liquid outlet hole corresponding to the liquid outlet channel 160, so that the cooling liquid in the plurality of heat exchange channels 130 flows to the liquid outlet 150 through the liquid outlet channel 160.

Referring to fig. 2, the liquid inlet joint 170 is provided with a main flow pipe 171 and a plurality of branch flow pipes 172 for communicating with the liquid inlet 140, the main flow pipe 171 communicates with the branch flow pipes 172, the liquid outlet joint 180 communicates with the liquid outlet 150, the plurality of branch flow pipes 172 are provided corresponding to the liquid inlet 140, the branch flow pipes 172 are connected to the main flow pipe 171 at the same level, and the diameters of the branch flow pipes 172 are the same.

In the process of feeding the heat exchange flow channel 130, the box 100 is horizontally placed, the bottom plate 110 is kept in a horizontal state, when the cooling liquid is driven to vertically rise, the cooling liquid flows into the flow branch pipes 172 from the flow main pipe 171, when the cooling liquid enters any number of flow branch pipes 172, the liquid level in each flow branch pipe 172 is kept horizontal, and therefore the liquid separation uniformity in each flow channel can be guaranteed. The uniform liquid inlet of each heat exchange flow channel 130 can be realized, and the uniform heat dissipation of the battery cell module 200 is enhanced.

In some embodiments, one end of the main flow pipe 171 is connected to each branch flow pipe 172, and the other end of the main flow pipe 171 can be installed with a liquid inlet valve 173, and the liquid inlet valve 173 controls the on/off of the main flow pipe 171, so as to control the liquid inlet of the heat exchange flow passage 130.

The liquid outlet joint 180 comprises a liquid outlet pipe 181 and a liquid outlet valve 182, one end of the liquid outlet joint 180 is communicated with the liquid outlet 150, the other end of the liquid outlet joint 180 is provided with the liquid outlet valve 182, and the liquid outlet valve 182 can control the on-off of the liquid outlet pipe 181, so as to control the liquid outlet of the heat exchange flow channel 130.

In addition, those skilled in the art can design the liquid inlet valve 173 and the liquid outlet valve 182 as electronic valve structures, and set a main control board, based on the temperature of the box 100, to control the opening and closing of the liquid inlet valve 173 and the liquid outlet valve 182 through the main control board, so as to enhance the accurate control of the temperature in the box 100.

The heat transfer runner 130, inlet 140 and liquid outlet 150 among the scheme of this application set up the U type flow path that is different from the feed liquor of current box 100 side, the side goes out the liquid, combines each position temperature of box 100, and the cooling liquid that the temperature is lower is preferred to carry out the heat transfer with the higher region of temperature in the box 100, and the cooling liquid gets into promptly behind the bottom plate 110, directly carries out the heat transfer to box 100 central thermoelectricity, improves heat exchange efficiency, and it is more even that the battery module heat transfer. The liquid inlet 140 is disposed at the bottom of the bottom plate 110, the connecting joint is provided with a plurality of flow branch pipes 172, the flow branch pipes 172 are communicated with the liquid inlet 140 of each heat exchange flow channel 130, the cooling liquid flows into the flow branch pipes 172 from the flow main pipe 171, and when the cooling liquid enters any number of flow branch pipes 172, the liquid level in each flow branch pipe 172 is kept horizontal, that is, the liquid separation uniformity in each flow path can be ensured. The uniform liquid inlet of each heat exchange flow channel 130 can be realized, and the uniform heat dissipation of the battery cell module 200 is enhanced.

After the coolant liquid flows out of the liquid storage tank, the coolant liquid flows to the liquid inlet joint 170 through the booster pump, and enters each heat exchange flow channel 130 through the circulation branch pipes 172, the coolant liquid firstly exchanges heat at the center of the bottom plate 110 and then flows along a spiral path, when the heat exchange flow channels 130 are circularly coiled, the curvature is reduced layer by layer when the coolant liquid flows, the resistance is reduced accordingly, the resistance distribution of the heat exchange flow channels 130 accords with the heat distribution characteristic, and the battery cell module 200 is uniformly cooled.

After the cooling operation is stopped, the cooling liquid in the bottom plate 110 flows out from the outlet to the liquid storage tank under the driving of gravity, so that no residual liquid is left in the bottom plate 110 during the non-operation period, and the risks of corrosion and leakage of the cooling liquid are reduced.

The box 100 of the scheme of the application has the following characteristics:

1. the bottom plate 110 has simple structural design, uniform heat dissipation, convenient installation and light weight, and is beneficial to improving the installation density of the battery;

2. the liquid inlet joint 170 enables the liquid level in each circulation branch to be flush only under the action of gravity, and can maintain relative uniformity under all flow working conditions without other loads, so that the flow of each heat exchange flow path is uniform;

3. the heat exchange flow path maintains the maximum temperature difference at the high-temperature hot point of the box body 100, so that the high-temperature area in the box body 100 is eliminated, and the temperature in the box body 100 is equalized;

4. the bottom plate 110 adopts a mode of feeding liquid downwards and discharging liquid downwards, so that the risk of corrosion and leakage of cooling liquid is reduced during shutdown, the existing side liquid inlet and outlet port is eliminated, the use space of the side box body 100 is increased, and support is provided for high battery arrangement density;

5. the heat exchange flow channel 130 is coiled, centrifugal force is weakened in a stepped manner, the initial position of turbulence intensity is strongest, which is beneficial to eliminating a high-temperature area in the box body 100, and then the turbulence intensity is weakened layer by layer, so that the flow channel resistance is effectively reduced;

in some embodiments, the box 100 and the base plate 110 can be applied to various scenes, such as passenger vehicles, commercial vehicles, special vehicles, energy storage systems, and the like.

In summary, the present application provides a box 100 and a battery, the battery is installed with the box 100, the box 100 includes the bottom plate 110, at least one heat exchange flow channel 130 is coiled in the bottom plate 110, and the bottom of the bottom plate 110 is provided with a liquid inlet 140 and a liquid outlet 150 which are communicated with the heat exchange flow channel 130, a liquid inlet structure and a liquid outlet structure are adopted for cold, when the cooling pump is stopped, the cooling liquid in the bottom plate 110 can return to the liquid storage tank through the liquid outlet 150 under the action of gravity, so as to ensure that no residual liquid exists in the bottom plate 110, thereby reducing the risk of corrosion or liquid leakage of the bottom plate 110, the distance between the liquid inlet 140 and the center of the bottom plate 110 is smaller than the distance between the liquid outlet 150 and the center of the bottom plate 110, the cooling liquid flows from the position close to the center of the bottom plate 110 in the heat exchange flow channel 130 toward the edge of the bottom plate 110, the heat distribution of the battery cells in the box 100 is dissipated from the center to the periphery, the cooling liquid flows from the high temperature of the box body 100 to the low temperature of the box body 100, and the heat exchange uniformity is improved.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the general inventive concept. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A box, characterized in that includes:

the heat exchanger comprises a bottom plate (110), wherein at least one heat exchange flow channel (130) is coiled in the bottom plate (110), and a liquid inlet (140) and a liquid outlet (150) which are communicated with the heat exchange flow channel (130) are formed in the bottom of the bottom plate (110);

wherein the distance between the liquid inlet (140) and the center of the bottom plate (110) is smaller than the distance between the liquid outlet (150) and the center of the bottom plate (110).

2. The cabinet as claimed in claim 1, wherein the heat exchange flow passage (130) has a winding center near a center of the bottom plate (110).

3. The cabinet as claimed in claim 2, wherein the heat exchange flow passage (130) is provided in a plurality, the plurality of heat exchange flow passages (130) are located in the same horizontal plane, and at least two of the heat exchange flow passages (130) are extended from a winding center in opposite directions and then are wound back and forth.

4. The tank as claimed in claim 2, wherein the inlet port (140) communicates with a winding center of the heat exchange flow passage (130).

5. The box body as claimed in claim 1, wherein the bottom plate (110) is provided with a plurality of heat exchange flow channels (130), the liquid inlet (140) is respectively formed on the bottom plate (110) corresponding to each heat exchange flow channel (130), and the plurality of heat exchange flow channels (130) are respectively communicated with the liquid outlet (150).

6. The box body as claimed in claim 5, wherein a liquid outlet flow passage (160) is further provided in the bottom plate (110), and a plurality of the heat exchange flow passages (130) and the liquid outlet (150) are respectively communicated with the liquid outlet flow passage (160).

7. The tank body as claimed in claim 1, wherein the tank body further comprises a liquid inlet joint (170) and a liquid outlet joint (180), the liquid inlet joint (170) is provided with a main circulation pipe (171) and a branch circulation pipe (172) for communicating with the liquid inlet (140), the branch circulation pipe (172) communicates with the main circulation pipe (171), and the liquid outlet joint (180) is connected with the liquid outlet (150).

8. The box body as claimed in claim 7, wherein the circulation branch pipes (172) are provided in plurality, each of the circulation branch pipes (172) is connected to the same level of the circulation main pipe (171), and the diameter of each of the circulation branch pipes (172) is the same.

9. The box according to claim 7, characterized in that the inlet connection (170) is further equipped with an inlet valve (173), the inlet valve (173) is mounted to the main flow pipe (171), and the outlet connection (180) is equipped with an outlet valve (182).

10. A battery, characterized in that a case according to any one of claims 1-9 is mounted.