CN220368054U

CN220368054U - Battery device

Info

Publication number: CN220368054U
Application number: CN202321905113.7U
Authority: CN
Inventors: 李国伟; 齐彬伟; 刘聪毅
Original assignee: China Innovation Aviation Technology Group Co ltd
Current assignee: China Innovation Aviation Technology Group Co ltd
Priority date: 2023-07-19
Filing date: 2023-07-19
Publication date: 2024-01-19
Anticipated expiration: 2033-07-19

Abstract

The present disclosure relates to the field of battery technology, and in particular, to a battery device, including: the battery box comprises a box body and a box cover, and the box cover is connected with the box body to form at least one battery compartment; the battery is located the battery compartment, the battery includes casing and ventilation mechanism, ventilation mechanism locates the casing is towards the one end of case lid, ventilation mechanism is with the gas in the exhaust casing, the case lid is towards one side of battery is provided with the exhaust space, the exhaust space with ventilation mechanism intercommunication. The problem that the gas generated by the battery core is accumulated in the shell to cause the expansion of the battery is avoided, and the expansion of the battery is restrained at least to a certain extent.

Description

Battery device

Technical Field

The disclosure relates to the technical field of batteries, and in particular relates to a battery device.

Background

In an electric vehicle, a battery pack is used as a power source, and one or more batteries are included in the battery pack. The battery comprises a shell and a battery cell, wherein the battery cell is arranged in the shell, and gas is generated by the battery cell in the charging and discharging process of the battery, and the gas can increase the pressure in the battery, so that the battery expands. In order to avoid the problem, the gas in the battery can be discharged, and after the gas in the battery is partially released, if too much gas is accumulated in the battery pack box, the gas in the battery pack still can be increased, and the safety problem of other batteries is easily caused.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An object of the present disclosure is to provide a battery device, and further to at least improve the safety of the battery device to some extent.

The present disclosure provides a battery device including:

the battery box comprises a box body and a box cover, and the box cover is connected with the box body to form at least one battery compartment;

the battery, the battery is located the battery compartment, the battery includes casing and ventilation mechanism, ventilation mechanism locates the casing is towards the one end of case lid, ventilation mechanism is with the gas in the discharge casing, the case lid is towards one side of battery is provided with the exhaust space, the exhaust space with ventilation mechanism intercommunication.

The battery device that this disclosed embodiment provided, including battery box and battery, the box of battery box and case lid are connected and are formed the battery compartment, the battery is located the battery compartment, the battery includes casing and ventilation mechanism, ventilation mechanism locates the one end that the casing is close to the case lid, ventilation mechanism is used for the gaseous discharge in the casing, the gaseous problem that causes battery expansion that gathers in the casing that has avoided the gas that the electricity core produced, the inflation of battery has been restrained to a certain extent at least, and be provided with the exhaust space in one side of case lid towards the battery, exhaust space and ventilation mechanism intercommunication, avoid because laminating between case lid and the battery too closely, cause the gaseous unable inside of arriving the box of discharging smoothly in the battery, and then influence the gaseous problem outside the discharge box such as box relief valve, promote battery device's security.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 is a schematic structural view of a first battery device provided in an exemplary embodiment of the present disclosure;

fig. 2 is a schematic structural view of a second battery device according to an exemplary embodiment of the present disclosure;

fig. 3 is a schematic structural view of a third battery device provided in an exemplary embodiment of the present disclosure;

fig. 4 is a schematic structural view of a battery according to an exemplary embodiment of the present disclosure;

fig. 5 is a partially enlarged schematic illustration of a battery provided in an exemplary embodiment of the present disclosure.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and are, for example, capable of being fixedly connected, detachably connected, or integrally connected, electrically connected, or signally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms "upper", "lower", "inner", "outer", and the like, as described in the example embodiments of the present disclosure, are described with the angles shown in the drawings, and should not be construed as limiting the example embodiments of the present disclosure. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

Exemplary embodiments of the present disclosure provide a battery device, as shown in fig. 1, including: the battery box 10 comprises a box body 11 and a box cover 12, and the box cover 12 is connected with the box body 11 to form at least one battery compartment 13; the battery 20 is arranged in the battery compartment 13, the battery 20 comprises a shell 21 and a ventilation mechanism 22, the ventilation mechanism 22 is arranged at one end of the shell 21 facing the case cover 12, the ventilation mechanism is used for exhausting gas in the shell 21, an exhaust space 31 is arranged at one side of the case cover 12 facing the battery 20, and the exhaust space 31 is communicated with the ventilation mechanism 22.

The battery device provided by the embodiment of the disclosure comprises a battery box 10 and a battery 20, wherein a box body 11 and a box cover 12 of the battery box 10 are connected to form a battery compartment 13, the battery 20 is arranged in the battery compartment 13, the battery 20 comprises a shell 21 and a ventilation mechanism 22, the ventilation mechanism 22 is arranged at one end of the shell 21 close to the box cover 12, the ventilation mechanism 22 is used for exhausting gas in the shell 21, the problem that the expansion of the battery 20 is caused by the aggregation of gas generated by a battery core in the shell 21 is avoided, the expansion of the battery 20 is restrained to at least a certain extent, and an exhaust space 31 is arranged at one side of the box cover 12 facing the battery 20, and the exhaust space 31 is communicated with the ventilation mechanism 22, so that the problem that the gas exhausted from the battery 20 cannot smoothly reach the interior of the box body 11 due to the fact that the box cover 12 is close to the battery 20 is attached to the battery 20, and then the problem that the gas is exhausted out of the box body 11 from a pressure release valve of the box body 11 is influenced is avoided, and the safety of the battery device is improved.

The following will describe each part of the battery device provided in the embodiments of the present disclosure in detail:

as shown in fig. 4, the battery 20 includes a housing 21, a battery cell, a pole 23, and a ventilation mechanism 22, a housing cavity is provided in the housing 21, the battery cell is provided in the housing cavity, and the pole 23 and the ventilation mechanism 22 are provided in the housing 21. For example, the housing 21 may be provided with a plurality of through holes, the pole 23 is disposed through a through hole, and the ventilation mechanism 22 is plugged in the through hole. The electrical core may be electrically connected to the pole 23 or the electrical core may be electrically connected to the housing 21.

The housing 21 is used to form the outline of the battery 20 and protect the devices such as the battery cells within the housing 21. The case 21 may include a case body 211 and a top panel 212, one end of the case body 211 having an opening, the top panel 212 being connected to the case body 211, and the top panel 212 blocking the opening in the case body 211. The top panel 212 is provided with a mounting hole 201, the ventilation mechanism 22 is provided on the top panel 212, and the ventilation mechanism 22 blocks the mounting hole 201.

Wherein, the shell main body 211 may include a bottom panel and a cylinder, the top panel 212 is connected with the cylinder, and the bottom panel is disposed at one end of the cylinder away from the top panel 212. The barrel is both ends open-ended tubular structure, and top panel 212 and curb plate are flat structure, and top panel 212 and curb plate shutoff barrel's both ends opening respectively.

At least one of the top panel 212 and the bottom panel and the cylinder are of a split molding structure, for example, the top panel 212 and the cylinder are of a split structure, the bottom panel and the cylinder are of an integrated molding structure, and the top panel 212 and the cylinder are connected in a welding or riveting mode. Alternatively, the bottom panel and the cylinder are in a split structure, the top panel 212 and the cylinder are in an integrated structure, and the bottom panel and the cylinder are connected by welding or riveting. Alternatively, the bottom panel 212 and the top panel 212 are both in a split structure with the cylinder, and the top panel 212 and the bottom panel are connected with the cylinder by welding or riveting.

The ventilation mechanism 22 is provided on the top plate 212, the top plate 212 is provided with mounting holes 201, the mounting holes 201 are through holes penetrating the top plate 212, and the ventilation mechanism 22 is blocked in the mounting holes 201. The pole 23 may be provided to the top panel 212, or the pole 23 may be provided to the bottom panel. When the pole 23 is provided on the top panel 212, the pole 23 and the ventilation mechanism 22 are disposed at a distance.

The battery cell is disposed in the housing 21, and the battery cell may include a battery cell main body, a first tab and a second tab, where the first tab and the second tab extend from the battery cell main body. Illustratively, the first tab and the second tab extend from an end of the cell body proximate the top panel 212. Of course, in practical applications, the first tab and the second tab may be distributed in other ways, which is not limited by the embodiment of the disclosure.

The battery cell comprises a first pole piece, a second pole piece and a diaphragm, and the first pole piece, the diaphragm and the second pole piece are integrated into the battery cell. The first pole piece may include a positive current collector and an active material layer, the active material layer is disposed on the positive current collector, the second pole piece may include a negative current collector and a negative coating, and the negative coating is coated on the negative current collector.

The battery cell may be a laminated battery cell, for example, having a first pole piece, a second pole piece, and a diaphragm sheet disposed between the first pole piece and the second pole piece stacked on top of each other such that the pairs of the first pole piece and the second pole piece are stacked to form a laminated battery cell. Or the battery cell can be a winding type battery cell, namely, the first pole piece, the second pole piece and a diaphragm sheet arranged between the first pole piece and the second pole piece are wound to obtain the winding type battery cell.

In a possible embodiment, the battery 20 may be a cylindrical battery or an approximately cylindrical battery. On this basis, the housing 21 has a cylindrical or nearly cylindrical shape, the top panel 212 and the bottom panel have a disk structure, and the cylinder has a cylindrical structure. In the cylindrical battery, the case 21 is one output terminal of the battery 20, the pole 23 is provided to the case 21, and the pole 23 is the other output terminal of the battery 20.

Here, a through hole is provided in the top plate 212, and the post 23 is inserted through the through hole, and the housing 21 and the bus bar are welded. The battery cell is connected to the housing 21 and the pole 23, respectively, for example, the battery cell has a first pole tab and a second pole tab, the first pole tab is connected to the pole 23 (welded or connected by an adapter), and the second pole tab is connected to the housing 21 (welded or connected by an adapter).

It should be noted that, the pole 23 is one output end of the battery 20, the housing 21 is the other output end of the battery 20, the pole 23 and the housing 21 are made of metal materials, for example, the material of the housing 21 may be stainless steel, aluminum, copper or nickel, and the material of the pole 23 may be stainless steel, aluminum, copper or nickel. In order to avoid short-circuiting of the battery 20, an insulator is provided between the post 23 and the housing 21. The insulator may be disposed in a through hole in the top panel 212, and the pole 23 is disposed through the insulator, so that the housing 21 and the pole 23 are insulated.

In another possible embodiment, the battery 20 may be a rectangular or nearly rectangular structure. On this basis, the housing 21 has a rectangular or nearly rectangular parallelepiped shape, the top panel 212 and the bottom panel have a rectangular disk structure, and the cylinder has a rectangular cylindrical structure. For example, the cylinder includes a first side plate, a second side plate, a third side plate, and a fourth side plate that are sequentially connected.

In the rectangular parallelepiped battery, a first pole and a second pole are provided on the case 21, the first pole and the second pole are provided on the top panel 212, the ventilation mechanism 22 is provided between the first pole and the second pole, and the ventilation film 222 and the first pole and the second pole are provided at intervals. Of course, in practical applications, the ventilation structure is disposed on the top panel 212, and the first and second poles may be disposed on the bottom panel, which is not limited in the embodiments of the disclosure.

Wherein, the shell 21 is provided with two through holes, and the first pole and the second pole are arranged in the corresponding through holes in a penetrating way. The battery cell is connected with the first pole and the second pole respectively, for example, the battery cell is provided with a first pole lug and a second pole lug, the first pole lug is connected with the first pole lug (welded or connected through an adapter), and the second pole lug is connected with the second pole lug (welded or connected through an adapter). The venting mechanism 22 may be located between the first pole and the second pole.

The ventilation mechanism 22 is connected to the housing 21, and the ventilation mechanism 22 blocks the mounting hole 201. The gas permeable membrane 222 can permeate the gas in the housing 21, and the gas generated by the battery cell in the working process is discharged out of the housing 21 through the gas permeable membrane 222. The breathable film 222 has breathability, and the breathable film 222 may be a PU film, a TPU film, an EPTFE film, or the like.

In a possible embodiment, as shown in fig. 5, the ventilation mechanism 22 may include a ventilation membrane 222 and a base 221, the base 221 is connected to the mounting hole 201, the ventilation hole 202 is disposed on the base 221, the ventilation membrane 222 is connected to the base 221, and the ventilation membrane 222 seals the ventilation hole 202. For example, the base 221 may be connected to the housing 21 by welding, and the air-permeable film 222 and the base 221 may be connected by bonding or heat-fusion.

Wherein, the base 221 may be provided with one or more ventilation holes 202, and the ventilation film 222 covers the one or more ventilation holes 202. When the base 221 is provided with the plurality of ventilation holes 202, the ventilation holes 202 are arranged at intervals, and the ventilation film 222 is connected with the surface of the base 221 around the ventilation holes 202, that is, the strength of the ventilation film 222 is increased by being connected with the base 221, so that the problem that the ventilation holes 202 are easily torn when being impacted by gas is avoided.

In another possible embodiment, the venting mechanism 22 includes a venting membrane 222, where the venting membrane 222 is attached to the top panel 212, such as by bonding or heat staking the venting membrane 222 to the top panel 212. The top panel 212 is provided with mounting holes 201, and the ventilation film 222 is sealed in the mounting holes 201. The gas permeable membrane 222 is used for ventilation, and gas in the housing 21 of the battery 20 can be discharged out of the housing 21 through the gas permeable membrane 222, and gas outside the housing 21 can also enter the housing 21 through the gas permeable membrane 222.

Wherein, the top panel 212 may be provided with one or more ventilation holes 202, and the ventilation film 222 covers the one or more ventilation holes 202. When the top panel 212 is provided with the plurality of ventilation holes 202, the plurality of ventilation holes 202 are arranged at intervals, and the ventilation film 222 is connected with the surface of the top panel 212 around the ventilation holes 202, namely, the strength of the ventilation film 222 is increased by being connected with the top panel 212, so that the problems that the strength of the ventilation film 222 is low and the ventilation film is easy to tear due to overlarge area of the mounting holes 201 are avoided.

The battery case 10 forms an outer contour of the battery device, and the battery case 10 serves to protect the battery 20 and the like inside the battery device. The battery box 10 comprises a box body 11 and a box cover 12, wherein the box body 11 is provided with a containing space, the box cover 12 is connected with the box body 11 to form a sealed battery compartment 13, and the battery 20 is arranged in the battery compartment 13.

The case 11 includes a base plate and a frame disposed on the base plate and forming one or more battery compartments 13, a battery pack disposed in the battery compartment 13, and a ventilation mechanism 22 disposed at an end of the battery 20 remote from the base plate. By way of example, the housing 11 may have a rectangular or approximately rectangular configuration. The bottom plate is rectangular flat plate structure, and the bottom plate supports the group battery. The frame can include first boundary beam, second boundary beam, third boundary beam and fourth boundary beam, and first boundary beam, second boundary beam, third boundary beam and fourth boundary beam meet from end to end in proper order and form the rectangle framework. One or more dividing beams may be provided in the frame, which divide the space in the frame into a plurality of battery compartments 13. For example, a first partition beam and a second partition beam are vertically disposed in the frame, and the first partition beam and the second partition beam partition the space in the frame into four battery compartments 13.

The case cover 12 and the case 11 are connected to form a closed battery compartment 13. For example, the case 11 and the case cover 12 may be connected by bolting, riveting, welding, or the like. In order to ensure the tightness of the connection between the case cover 12 and the case body 11, the battery case 10 may further include a gasket interposed between the case body 11 and the case cover 12.

The battery compartment 13 is provided therein with a plurality of batteries 20, and the plurality of batteries 20 form a battery pack. When the battery 20 is a rectangular parallelepiped battery 20, a plurality of batteries 20 are arranged in a first direction to form a battery pack. By way of example, the battery 20 may include two oppositely disposed first surfaces and four second surfaces between the two first surfaces, the first surfaces having an area greater than an area of the second surfaces. The first surfaces of two adjacent cells 20 in the stack are opposite, and the top panel 212 of the cell 20 forms a second surface, the top panel 212 of the cell 20 facing the case lid 12.

When the battery 20 is a cylindrical battery 20, the battery pack may include a plurality of batteries 20 and a support frame, where the plurality of batteries 20 are arranged in at least one row, and the support frame is provided with a containing portion, and the batteries 20 are disposed on the containing portion. The accommodating parts on the supporting frame correspond to the batteries 20 one by one, and the accommodating parts can be accommodating recesses or accommodating through holes. The support frame is disposed between the battery 20 and the base plate, that is, the ventilation mechanism 22 is disposed at an end of the battery 20 away from the support frame.

The battery string includes a plurality of batteries 20, and the plurality of batteries 20 are arranged in a first direction. The plurality of battery columns are arranged along a second direction, and the second direction is perpendicular to the first direction. And pouring sealant is arranged between adjacent batteries 20 in the battery pack, and encapsulates the plurality of batteries 20.

The case cover 12 is provided with a vent space 31 on a side facing the battery 20, and the vent space 31 communicates with the ventilation mechanism 22. That is, a vent space 31 is provided between the case cover 12 and the battery pack, the vent space 31 communicates with the ventilation mechanism 22, and the gas generated in the battery 20 is discharged to the vent space 31 through the ventilation mechanism 22.

In one possible embodiment, there is a gap between the venting mechanism 22 and the lid 12, and the gap between the venting mechanism and the lid 12 forms the vent space 31. The bottom surface of the case cover 12 is not in contact with the top surface of the battery pack. When the ventilation mechanism 22 is flush with the top surface of the battery pack, the gap between the cover 12 and the battery pack forms a vent space 31. When the ventilation mechanism 22 protrudes from the top surface of the battery pack, the distance between the bottom surface of the case cover 12 and the top surface of the battery pack is greater than the height by which the ventilation mechanism 22 protrudes from the case 21, so that a gap is formed between the ventilation mechanism 22 and the case cover 12.

In a further possible embodiment, the side of the cover 12 facing the battery 20 is provided with a vent channel extending in a predetermined direction, which vent channel forms a vent space 31, into which vent mechanism 22 extends at least partially. The gas in the battery 20 will be accompanied by a small amount of electrolyte when passing through the gas permeable membrane 222, and the gas and electrolyte enter the gas exhaust channel, and the electrolyte is restrained by the gas exhaust channel, so that the random flowing of the electrolyte in the battery device is avoided to pollute the battery device.

The extending direction of the exhaust channel may be a first direction (the arrangement direction of the batteries 20 in the battery pack), and the exhaust channel is communicated with the ventilation mechanisms 22 of the plurality of batteries 20, so that the gas discharged from the ventilation mechanisms 22 of the plurality of batteries 20 is discharged to the exhaust channel, and the gas is guided to be discharged to the preset position of the case 11 under the guiding action of the exhaust channel. Of course, in practical applications, the extending direction of the exhaust channel may be other directions, for example, the extending direction of the exhaust channel is the second direction (perpendicular to the first direction), which is not limited in this embodiment.

Alternatively, as shown in fig. 2, a recess 301 is provided on a surface of the case cover 12 facing the battery 20, and the recess 301 forms an exhaust passage. The ventilation mechanism 22 extends into the recess 301, and the gas and electrolyte discharged from the ventilation mechanism 22 enter the recess 301. The depressed portion 301 may extend from the top surface of the battery 20 to the edge of the battery compartment 13, and a liquid storage structure may be disposed at the edge of the battery compartment 13, where the liquid storage structure is communicated with the depressed portion 301, and the liquid storage structure is used for accommodating electrolyte, so as to avoid the electrolyte from corroding other batteries.

Illustratively, the lid 12 includes a cover having an exhaust area thereon, and the recess 301 is formed by thinning the exhaust area of the cover. For example, the recess 301 may be formed by milling on the cover. The concave part 301 is formed by thinning the cover body, so that the thickness and the weight of the cover are not additionally increased, and the energy density of the battery pack is improved.

The ventilation mechanism 22 extends into the recess 301, the bottom surface of the cover 12 may abut against the housing 21, and a gap is provided between the top surface of the recess 301 and the ventilation mechanism 22. The bottom surface of the case cover 12 abuts against the case 21, thereby realizing the sealing of the exhaust passage and preventing the electrolyte from flowing out from the side portion of the exhaust passage. Of course, in some embodiments, the bottom surface of the case cover 12 may abut against the top surface of the air exhaust mechanism, and the air holes 202 and the concave portions 301 are disposed opposite to each other, so that the air exhausted from the air holes 202 can enter the concave portions 301, and the height and weight of the case cover 12 are prevented from being increased due to the arrangement of the concave portions 301.

Alternatively, as shown in fig. 3, the case cover 12 is provided with a first protruding portion 311 and a second protruding portion 312 on a side facing the battery 20, the first protruding portion 311 and the second protruding portion 312 extend in a preset direction (first direction), and the first protruding portion 311 and the second protruding portion 312 are provided at intervals, and an exhaust passage 302 is formed between the first protruding portion 311 and the second protruding portion 312.

The first protruding portion 311 abuts against the case 21 at an end away from the case cover 12, and the second protruding portion 312 abuts against the case 21 at an end away from the case cover 12. Of course, in some embodiments, the first protruding portion 311 and the second protruding portion 312 may abut against the top surface of the exhaust mechanism, and the ventilation hole 202 is located between the first protruding portion 311 and the second protruding portion 312, so that the gas exhausted from the ventilation hole 202 can enter the exhaust channel 302.

In the embodiment of the present disclosure, the first protruding portion 311 and the second protruding portion 312 may be integrally formed with the cover 12, for example, the first protruding portion 311 and the second protruding portion 312 may be formed by punching or machining, etc. in the form of the cover 12. Or the first protruding portion 311 and the second protruding portion 312 and the case cover 12 may be formed in a separate structure, for example, the first protruding portion 311 and the second protruding portion 312 may be connected to the case 11 by bonding, welding, bolting, or the like.

Preferably, the first protruding portion 311 and the second protruding portion 312 and the case cover 12 may be formed in a separate structure, and the case cover 12 is generally made of a metal material, and if the first protruding portion 311 and the second protruding portion 312 are made of a metal material, the battery 20 may be damaged when the first protruding portion 311 and the second protruding portion 312 abut against the battery 20 due to manufacturing errors or the like. The first protruding portion 311 and the second protruding portion 312 are made of plastic or rubber, etc., and the first protruding portion 311 and the second protruding portion 312 are formed as a separate structure from the case cover 12.

The side wall of the box 11 is provided with a pressure relief valve, and the exhaust passage extends to one side of the box 11 where the pressure relief valve is arranged. The gas generated in the battery is transmitted to the pressure release valve through the exhaust passage, so that the gas is conveniently discharged from the tank pressure release valve to the outside of the tank 11.

The box body 11 further comprises an electric cabin, and the box cover 12 is provided with a blocking part which is used for isolating the electric cabin from the exhaust channel so as to block gas in the exhaust channel from entering the electric cabin. The electric compartment and the battery compartment 13 are disposed adjacently with a partition beam therebetween, and the electric compartment is for accommodating electric components (e.g., electric connectors, battery management components, etc.) of the battery device. By isolating the electric compartment from the exhaust passage by the barrier, the gas exhausted from the ventilation mechanism 22 can be prevented from entering the electric compartment, thereby causing destruction of the electric components in the electric compartment.

Further, the battery device provided by the embodiment of the present disclosure may further include a bus bar, a cooling device, and the like, the bus bar being provided in the battery case 10, and the bus bar electrically connecting (connecting in series or parallel) the plurality of batteries 20 in the battery pack. The cooling device is provided in the case 11 and at least partially contacts the battery 20 to cool the battery 20.

Wherein the busbar is arranged between the battery 20 and the case cover 12, the busbar is connected with the case 21 and/or the poles of the battery, and the busbar and the exhaust passage are arranged at intervals. The exhaust channel and the bus bar are arranged at intervals, so that the gas is prevented from affecting the bus bar electric connection position.

The battery device provided by the embodiment of the disclosure can be applied to an electric vehicle, and when the battery device is used for the electric vehicle, the battery device can be a battery pack which is installed on the electric vehicle and provides energy for the electric vehicle.

In practice, the battery pack may be mounted to the frame of an electric vehicle. The battery pack can be fixedly connected with the frame. Or the battery pack can be a modularized battery pack which can be detachably connected to the vehicle body, so that the battery pack is convenient to replace.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A battery device, characterized in that the battery device comprises:

2. The battery device of claim 1, wherein a gap is provided between the venting mechanism and the cover, the gap between the venting mechanism and the cover forming the vent space.

3. The battery device according to claim 1, wherein a side of the cover facing the battery is provided with a vent passage extending in a predetermined direction, the vent passage forming the vent space.

4. A battery device according to claim 3, wherein a plurality of said batteries are provided in said battery compartment, a plurality of said batteries being arranged in a first direction, said vent passage extending in said first direction, said vent passage being in communication with a plurality of said battery venting mechanisms.

5. A battery device according to claim 3, wherein a face of the case cover facing the battery is provided with a recess portion, the recess portion forming the exhaust passage.

6. The battery device of claim 5, wherein the cover includes a cover body having an exhaust area thereon, and the recess is formed by thinning the exhaust area of the cover body.

7. The battery device according to claim 3, wherein a face of the case cover facing the battery is provided with a first boss and a second boss extending in a predetermined direction, and the first boss and the second boss are disposed at a distance from each other, and the exhaust passage is formed between the first boss and the second boss.

8. The battery device according to claim 7, wherein an end of the first protruding portion away from the case cover abuts against the case, and an end of the second protruding portion away from the case cover abuts against the case.

9. A battery device according to claim 3, wherein a pressure release valve is provided on a side wall of the case, and the exhaust passage extends to a side of the case where the pressure release valve is provided.

10. The battery device of claim 3, wherein the battery device further comprises:

the busbar is arranged between the battery and the case cover, the busbar is connected with the shell and/or the pole post of the battery, and the busbar and the exhaust channel are arranged at intervals.

11. The battery device of claim 3, wherein the housing further comprises an electrical compartment, and the cover is provided with a blocking portion for isolating the electrical compartment from the exhaust passage to block gas in the exhaust passage from entering the electrical compartment.

12. The battery device of any one of claims 3-11, wherein the venting mechanism extends at least partially into the vent passage.

13. The battery device of claim 1, wherein the venting mechanism comprises:

the base is connected with the shell, the base is provided with ventilation holes, and the ventilation holes are communicated with the shell;

the breathable film is connected with the base, and the breathable film seals the ventilation holes.

14. The battery device of claim 13, wherein the housing includes a top panel having mounting holes disposed therein, the base being coupled to the mounting holes.