CN218070114U - Battery pack box, battery pack, electric device and equipment for manufacturing battery pack - Google Patents

Abstract

The utility model discloses a battery pack box body, a battery pack, an electric device and equipment for manufacturing the battery pack, relating to the technical field of batteries; the battery pack box body comprises a plurality of side beams, a bottom plate and an exhaust channel; the side beams are enclosed into an accommodating space, and a first opening and a second opening are formed at two ends of the accommodating space; the bottom plate is arranged at the first opening and used for closing the first opening; the exhaust passage is arranged on the bottom plate and can be communicated with the outside, an air inlet is formed in one side, facing the second opening, of the exhaust passage, the air inlet can be communicated with the exhaust passage and the accommodating space, and the exhaust passage is used for releasing pressure to the outside through the exhaust passage when the battery core is out of thermal control. The air inlet is seted up to the exhaust passage up position of this battery package box for the molten material that sprays when electric core thermal runaway can discharge through the air inlet under the action of gravity, and reducible molten material splashes and piles up in battery package box, can reduce the influence to other electric cores, improves the security performance.

Description

Battery pack box, battery pack, electric device and equipment for manufacturing battery pack

Technical Field

The utility model relates to a battery technology field particularly, relates to a battery package box, battery package, consumer and the equipment of making the battery package.

Background

In the related art, the molten substances sprayed out after the thermal runaway of the battery core are accumulated in the battery pack and are difficult to remove, and the normal work of other battery cores can be influenced, so that more serious safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery package box and battery package, its structure that can directly pass through battery package box self carries out the pressure release of exhausting, can improve the security performance.

An object of the utility model is to provide an electric installation, it supplies power through foretell battery package. Therefore, the electric device has the advantage of high safety performance.

Another object of the present invention is to provide an apparatus for manufacturing a battery pack, which can manufacture a battery pack having high safety performance.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides a battery package box, include:

the side beams enclose an accommodating space, and both ends of the accommodating space are provided with a first opening and a second opening;

the bottom plate is arranged at the first opening and used for sealing the first opening;

and the exhaust channel is arranged on the bottom plate and can be communicated with the outside, an air inlet is arranged on one side of the exhaust channel facing the second opening, and the air inlet can be communicated with the exhaust channel and the accommodating space and is used for releasing pressure to the outside through the exhaust channel when the battery core is out of thermal control.

In an optional embodiment, the exhaust channel is provided with a plurality of air inlets, and each air inlet is arranged at intervals;

and/or the presence of a gas in the atmosphere,

a plurality of exhaust channels are arranged on the bottom plate, and an air inlet is arranged on each exhaust channel.

In an alternative embodiment, in the direction from the first opening to the second opening, the exhaust channel comprises a first plate and a second plate which are arranged at intervals, and the air inlet hole penetrates through the second plate.

In an alternative embodiment, the exhaust channel is bonded to the base plate;

or,

the exhaust passage is fastened to the base plate through a fastener;

or,

one of the exhaust channel and the bottom plate is provided with a plug-in groove, the other one of the exhaust channel and the bottom plate is provided with a plug-in part, and the plug-in part is plugged with the plug-in groove.

In an optional embodiment, the exhaust channel is connected and arranged between two side beams which are arranged at intervals, the position of each side beam opposite to the exhaust channel is provided with an exhaust hole, and two ends of the exhaust channel are respectively communicated with the outside through the two exhaust holes;

or,

the communicating chambers are circumferentially communicated in the side beams, the communicating chambers are provided with exhaust holes communicated with the outside, two ends of the exhaust channel are respectively connected with the two side beams, and the exhaust channel is communicated with the communicating chambers.

In an alternative embodiment, the end of the exhaust passage is fastened to the adjacent side member;

or,

the end part of the exhaust channel is inserted with the adjacent side beam;

or,

the periphery of the end of the exhaust passage is bonded to the side member.

In a second aspect, the present invention provides a battery pack, including:

the battery pack case of any of the preceding embodiments;

the battery cell is arranged in the accommodating space, the safety valve of the battery cell is opposite to the air inlet hole or can stretch into the air inlet hole, and the battery cell is provided with a side closed air inlet hole of the safety valve.

In an alternative embodiment, the battery pack comprises a plurality of battery cells stacked and arranged in the accommodating space;

a plurality of air inlets matched with the number of the plurality of battery cells are formed in the exhaust channel, and each safety valve is opposite to the corresponding air inlet or can stretch into the corresponding air inlet.

In an optional embodiment, the air inlet hole and the safety valve are both in a waist-shaped structure, the radius of the circular arc parts at the two ends of the air inlet hole is R1, the length between the two ends of the air inlet hole is L1, the radius of the circular arc parts at the two ends of the safety valve is R2, the length between the two ends of the safety valve is L2, the safety valve is opposite to the central position of the corresponding air inlet hole, the distance from the edge of the arc part of the safety valve to the edge of the arc part of the air inlet hole is H1, and the distance from the edge of the linear part of the safety valve to the edge of the linear part of the air inlet hole is H2;

the size design of the air inlet and the safety valve meets any one of a first condition and a second condition, wherein the first condition is as follows: r1> R2, L2<2 (R1-R2) + L1, H1= R1-R2+ (L1-L2)/2, H2= R1-R2, with the proviso that two: r1> R2, L1> L2, 0-H1 < (L1-L2)/2, 0-H2 < (R1-R2).

In an optional embodiment, the safety valve is convexly arranged on the end surface of the electric core, one end of the safety valve, which is adjacent to the first opening, extends into the corresponding air inlet hole, and the end surface of one end of the electric core, which is provided with the safety valve, is supported on the exhaust channel and closes the corresponding air inlet hole;

or,

the relief valve caves in the terminal surface of electric core, and relief valve and inlet port interval set up, and electric core sets up the circumference of the one end of relief valve and supports in exhaust passage, and seals the inlet port that corresponds.

In an alternative embodiment, a positive pole and a negative pole are arranged on one side of the battery cell, which is far away from the safety valve and close to the second opening.

A third aspect of the present invention provides an electric device, including:

an electricity utilization mechanism;

the battery pack of any one of the preceding embodiments, wherein the battery pack is configured to power an electrical utility.

In a fourth aspect, the present invention provides an apparatus for manufacturing a battery pack, comprising:

the battery pack box comprises a plurality of side beams, a bottom plate and an exhaust channel; the side beams are enclosed into an accommodating space, and both ends of the accommodating space are provided with a first opening and a second opening; the bottom plate is arranged at the first opening and used for closing the first opening; an air inlet is formed in one side, facing the second opening, of the exhaust channel, can be communicated with the exhaust channel and the accommodating space and is used for releasing pressure to the outside through the exhaust channel when the battery cell is out of control due to heat;

the installation module is used for enclosing a plurality of side beams into an accommodating space, is used for arranging the bottom plate at the first opening, is used for arranging the exhaust channel on the bottom plate, and is used for stacking a plurality of battery cores in the accommodating space.

The embodiment of the utility model provides an at least possess following advantage or beneficial effect and be:

the embodiment of the utility model provides a battery pack box body, which comprises a plurality of side beams, a bottom plate and an exhaust channel; the side beams are enclosed into an accommodating space, and both ends of the accommodating space are provided with a first opening and a second opening; the bottom plate is arranged at the first opening and used for closing the first opening; exhaust passage sets up in the bottom plate, and can communicate with the external world, and exhaust passage is equipped with the inlet port towards second open-ended one side, and the inlet port can communicate exhaust passage and accommodating space, and is used for passing through exhaust passage to external pressure release when electric core thermal runaway. On one hand, the upward position of the exhaust channel is provided with an air inlet, so that the molten material sprayed during the thermal runaway of the battery core moves downwards under the action of gravity and is discharged to the outside through the air inlet to be decompressed, the splashing and accumulation of the molten material in the battery pack box can be reduced, the influence on other battery cores can be reduced, the thermal runaway diffusion is prevented, and the safety performance is improved; on the other hand, the operation that the exhaust passage directly releases pressure to the outside through the air inlet hole has high pressure release speed and high reaction rate, and can further improve the safety performance.

The embodiment of the utility model also provides a power consumption device, it supplies power through foretell battery package. Therefore, the electric device has the advantage of high safety performance.

The embodiment of the utility model provides a still provide one kind with the equipment of manufacturing the battery package, it can make the battery package that obtains above-mentioned security performance height.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a battery pack case provided in an embodiment of the present invention;

fig. 2 is an exploded schematic view of a battery pack case according to an embodiment of the present invention;

fig. 3 is a schematic view of a partial structure of a battery pack according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2 at I;

fig. 5 is a schematic diagram of a partial structure of a battery pack case according to an embodiment of the present invention.

The icon is 100-battery pack box body; 101-side beam; 103-a housing space; 105-a first opening; 107-second opening; 109-a base plate; 111-an exhaust channel; 113-safety valve; 115-an air intake; 119-a passage port; 121-a fastener; 123-fastening hole; 125-vent hole; 127-glue layer; 129-lightening holes.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as 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 present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the related art, the molten substances sprayed out after the thermal runaway of the battery core are accumulated in the battery pack and are difficult to remove, and the normal work of other battery cores can be influenced, so that more serious safety accidents are caused. In view of this, the present embodiment provides a battery pack, which can directly perform air exhaust and pressure relief through the structure of the battery pack case itself, reduce the influence on other electric cores, and prevent thermal runaway diffusion and spreading, so as to sufficiently improve the safety performance. The structure of the battery pack will be described in detail below.

Fig. 1 is a schematic structural diagram of a battery pack case 100 according to the present embodiment; fig. 2 is an exploded view of the battery pack case 100 according to this embodiment. The battery pack provided in this embodiment includes the battery pack case 100 shown in fig. 1 and fig. 2, and further includes a plurality of battery cells disposed in the battery pack case 100.

The battery pack box 100 is a frame structure of the battery pack, and is used for ensuring the safety and stability of the battery cell so as to ensure the normal operation of charging and discharging operation. Specifically, the battery pack case 100 includes a bottom plate 109 and a plurality of side members 101. The plurality of side members 101 surround a ring-shaped frame structure, and an accommodating space 103 is formed in the circumferential direction of the inner edges of the plurality of side members 101. The two ends of the housing space 103 have a first opening 105 and a second opening 107, respectively. The bottom plate 109 is disposed at the first opening 105 for closing the first opening 105.

Alternatively, the number of the side members 101 is four, and the four side members 101 are connected end to form a square ring-shaped structure. Two of the four side members 101 are spaced apart in a first direction (i.e., ab direction in fig. 2), and the two side members 101 are arranged to extend in a second direction (i.e., cd direction in fig. 2). The other two side members 101 of the four side members 101 are opposed and spaced apart in the second direction, and both of the two side members 101 are arranged extending in the first direction. The inner edges of the four side beams together form a receiving space 103. Set up the quantity of curb girder 101 to four, form square frame structure, can adapt to the installation and the holding demand of most square electric cores, in other embodiments, the quantity of curb girder 101 can also increase or reduce according to the demand, can satisfy the installation demand of electric core can, this embodiment does not do the restriction.

A plurality of battery cells are disposed in the accommodating space 103, and the bottom plate 109 can support the plurality of battery cells. And, a plurality of electric cores divide into a plurality of electric core groups that set up side by side along the second direction, and every electric core group all includes and piles up a plurality of electric cores that set up along the first direction. For example, in the present embodiment, the plurality of cells form two cell groups, each of which includes twelve cells arranged in a stack. The plurality of battery cells are connected in parallel or in series so as to facilitate charge and discharge operation. Of course, in other embodiments, the number of the electric core groups and the number of the electric cores in each electric core group can be adjusted according to the requirement, and the embodiment is not limited.

In addition, in this embodiment, after a single battery cell is out of control due to thermal runaway, a molten substance of the single battery cell may be sprayed into the accommodating space 103 of the battery pack case 100, the battery pack case 100 is further provided with an exhaust channel 111 according to a requirement, the exhaust channel 111 is disposed on one side of the bottom plate 109 close to the second opening 107, the exhaust channel 111 can be directly communicated with the outside, one side of the exhaust channel 111 facing the second opening 107 is provided with an air inlet 115, and the air inlet 115 can be communicated with the exhaust channel 111 and the accommodating space 103, so as to collect the molten substance sprayed by the single battery cell when the battery cell is out of control due to thermal runaway, and release the molten substance to the outside through the exhaust channel 111. On one hand, the air inlet hole 115 is formed in the upward position of the exhaust channel 111, so that molten substances sprayed during thermal runaway of the battery cell move downwards under the action of gravity and are discharged to the outside through the air inlet hole 115 to be decompressed, splashing and accumulation of the molten substances in the battery pack box 100 can be reduced, the influence on other battery cells can be reduced, thermal runaway diffusion is prevented, and safety performance is improved; on the other hand, the air inlet hole 115 can directly release pressure to the outside through the exhaust passage 111 when the battery core is out of control due to heat, so that the pressure release speed is high, the reaction rate is high, and the safety performance can be further improved.

It should be noted that, in this embodiment, the exhaust channel 111 is a long square tubular structure, and in the direction from the first opening 105 to the second opening 107, the exhaust channel 111 includes a first plate and a second plate that are arranged at an interval, and the air inlet hole 115 penetrates through the second plate, so as to accommodate the molten material ejected from the battery cell.

In order to reduce splashing of the molten material sprayed from the battery cell, in this embodiment, the safety valve 113 of each battery cell is located on one side of the battery cell facing the bottom plate 109, so that the safety valve 113 of the battery cell can be opposite to the air inlet hole 115 or can extend into the air inlet hole 115, and the air inlet hole 115 can be closed on one side of the battery cell where the safety valve 113 is located. On the one hand, with the relief valve 113 of electric core towards bottom plate 109, and relative or stretch into inlet port 115 with inlet port 115 for when electric core thermal runaway, its fusion material that erupts can get into adjacent inlet port 115 in the twinkling of an eye, thereby make the fusion material can directly carry out the pressure release through exhaust passage 111, thereby can reduce the influence to other electric cores, with the security of fully guaranteeing the battery package, the life of extension battery package. On the other hand, because electric core sets up one side closed inlet hole 115 of relief valve 113, therefore when electric core thermal runaway, the pressure release can only go on through inlet hole 115 and exhaust passage 111, and the pressure release process can not influence other structures of battery package box 100, can guarantee the security and the reliability of other structures in battery package box 100, prolongs its life, also can prevent thermal runaway diffusion to other electric cores to improve the security of battery package.

Alternatively, in the present embodiment, the number of the exhaust channels 111 may be set to match the number of the cell groups, for example, two exhaust channels 111 arranged at intervals as shown in fig. 1 and fig. 2, and the number of the air inlets 115 on each exhaust channel 111 matches the number of the safety valves 113 in each cell group, for example, twelve air inlets 115 arranged at intervals in the first direction are arranged on each exhaust channel 111. And twelve safety valves 113 in each battery pack are arranged in one-to-one correspondence with twelve air inlets 115, so that the explosion-proof operation of the battery pack box body 100 is more timely and reliable, the flow of molten substances to other places can be effectively reduced, and the safety of the battery pack is further improved. Meanwhile, as the two exhaust passages 111 are arranged at intervals, a gap can be formed between the two exhaust passages 111, and the heat dissipation operation is facilitated. Of course, in other embodiments, the plurality of exhaust channels 111 may also be disposed adjacently, so that the upper surfaces of the plurality of exhaust channels 111 form a plane to better support the battery cell 201.

It should be noted that, in order to ensure the timeliness of explosion prevention of the battery pack, in this embodiment, the size of each air inlet hole 115 may be set to be slightly larger than the size of the safety valve 113 of the corresponding battery cell, so that the projection of the safety valve 113 in the vertical direction (i.e., the ef direction in fig. 2) completely falls within the range of the corresponding air inlet hole 115.

Specifically, fig. 3 is a schematic diagram of a partial structure of the battery pack provided in this embodiment. Referring to fig. 2 and 3, in the present embodiment, the air inlet hole 115 and the safety valve 113 are both in a kidney-shaped structure, the radius of the circular arc portions at the two ends of the air inlet hole 115 is R1, the length between the two ends of the air inlet hole 115 is L1, the radius of the circular arc portions at the two ends of the safety valve 113 is R2, the length between the two ends of the safety valve 113 is L2, the safety valve 113 is opposite to the center position of the corresponding air inlet hole 115, the distance from the edge of the arc portion of the safety valve 113 to the edge of the arc portion of the air inlet hole 115 is H1, and the distance from the edge of the straight portion of the safety valve 113 to the edge of the straight portion of the air inlet hole 115 is H2. The air intake hole 115 and the relief valve 113 are dimensioned to satisfy either of the first condition and the second condition, the first condition being: r1> R2, L2<2 (R1-R2) + L1, H1= R1-R2+ (L1-L2)/2, H2= R1-R2, with the proviso of two: r1> R2, L1> L2,0 & lt H1 & lt (L1-L2)/2, 0 & lt H2 & lt 2 & gt (R1-R2). Through shape and size to inlet port 115 and relief valve 113 restrict, can guarantee that electric core thermal runaway time from the corresponding relief valve 113 spun molten material can be acceptd by the inlet port 115 that corresponds more to be convenient for make molten material can discharge in order to carry out the pressure release through exhaust passage 111, with guaranteeing pressure release efficiency and effect, reduce the influence to other electric cores, with the security that improves the battery package.

It should be further noted that, in this embodiment, the safety valve 113 of each cell may be configured to protrude toward the first opening 105, so that a side of the safety valve 113 adjacent to the first opening 105 can extend into the corresponding air inlet hole 115, and thus an end of the cell where the safety valve 113 is disposed can be supported above the air exhaust channel 111 and can close the corresponding air inlet hole 115. Through setting up like this, can improve the stability and the security of electric core on the one hand to improve the stability, reliability and the security of battery package. On the other hand, each air inlet 115 can be sealed when the battery core is not in thermal runaway, so that external water vapor is prevented from entering the battery pack, and the service life and the use performance of the battery pack can be guaranteed.

Of course, in this embodiment, the safety valve 113 may be recessed in the end surface of the electrical core, at this time, one end of the electrical core where the safety valve 113 is disposed is substantially in a bowl-shaped structure, the safety valve 113 is located at the bottom of the bowl-shaped structure, so that the circumferential direction of one end of the electrical core where the safety valve 113 is disposed can be supported on the periphery of the position where the air inlet hole 115 is disposed in the exhaust channel 111, the electrical core is stably supported behind the exhaust channel 111, the safety valve 113 and the air inlet hole 115 are disposed at an interval in the vertical direction, and the end surface of the electrical core where the safety valve 113 is disposed seals the corresponding air inlet hole 115. Through setting up like this, also can improve the stability and the security of electric core to improve battery package's stability, reliability and security. Meanwhile, each air inlet 115 can be sealed when the battery core is not out of thermal runaway, so that external water vapor is prevented from entering the battery pack, and the service life and the use performance of the battery pack can be guaranteed.

That is, no matter the terminal surface of electric core or the terminal surface of sunken in electric core is located to the relief valve 113 arch, the electric core sets up the terminal surface homoenergetic of relief valve 113 and seals inlet port 115, and the aim at that sets up like this prevents that external steam from getting into the normal work of influence battery package. Meanwhile, the arrangement is such that the air inlet hole 115 can only communicate the air exhaust channel 111 with the accommodating space 103 when the temperature or pressure in the accommodating space 103 deviates from a normal value (for example, cell thermal runaway), and the stability and safety of the charging and discharging operation of the battery pack can be further ensured. Certainly, in other embodiments, the battery cell may also be supported by the side beam 101, and after being supported by the side beam 101, it still needs to be ensured that the side of the battery cell where the safety valve 113 is disposed can close the air inlet 115 of the exhaust channel 111, so that when the battery cell is out of control due to heat, pressure relief can only be performed through the air inlet 115 and the exhaust channel 111, thereby reducing influences on other structures in the battery pack case 100; simultaneously, the terminal surface of 113 safety valves can also electric cores relatively flushes, the embodiment of the utility model provides an all do not do the injecing.

In addition, in this embodiment, the positive post and the negative post of each cell may also be separated from the safety valve 113, for example, the positive post and the negative post of each cell are both disposed on a side close to the second opening 107. Through setting up like this for when electric core thermal runaway, the security of positive post and negative pole post can not influenced by the melting material that erupts, can realize the thermoelectric separation, with the security that further improves the battery package.

Fig. 4 is a partial enlarged view at I of fig. 2. Referring to fig. 2 and 4, in the present embodiment, the exhaust channel 111 may be disposed to extend along the first direction, the exhaust channel 111 is disposed between the two side beams 101 spaced apart along the first direction, the exhaust hole 125 is disposed at a position of each side beam 101 opposite to the channel port 119 of the exhaust channel 111, and two ends of the exhaust channel 111 are respectively communicated with the outside through the two exhaust holes 125.

On one hand, through the arrangement, when the corresponding battery core is out of control due to heat, the corresponding air inlet hole 115 can be directly communicated with the air outlet hole 125 to release pressure to the outside, so that the pressure release is quicker and more reliable, and the safety of the battery pack can be further improved; on the other hand, the vent holes 125 are formed by using the original structure of the battery pack case 100, and other communication structures are not required to be additionally arranged, so that the load of the battery pack can be reduced, the energy density of the battery pack is ensured, the structure of the whole battery pack is more compact and reliable, and the occupied space is smaller. Of course, in other embodiments, a communication chamber that is circumferentially communicated may be disposed in the side beams 101, an exhaust hole 125 that is communicated with the outside is opened in the communication chamber, two ends of the exhaust channel 111 are respectively connected to the two side beams 101, and the exhaust channel 111 is communicated with the communication chamber to perform pressure relief, which is not limited in this embodiment.

It should be noted that each side member 101 may be provided with a lightening hole 129 penetrating along the length direction thereof, but since the side member 101 supporting the exhaust passage 111 needs to be provided with the exhaust hole 125, in order to ensure smooth exhaust of the exhaust hole 125, the lightening hole 129 may be provided only on the side member 101 not connected to the exhaust passage 111, so as to reduce the weight of the battery pack case 100 and improve the energy density of the battery pack.

In detail, in this embodiment, the end of the exhaust channel 111 and the adjacent side beam 101 may be connected by fastening, such as fastening with a bolt, or by bonding, or even directly inserting the end of the exhaust channel 111 into the exhaust hole 125, so that the channel port 119 can be exposed directly through the exhaust hole 125 for pressure relief, which is not limited in this embodiment.

In more detail, in the present embodiment, the exhaust channel 111 and the bottom plate 109 may be fastened by a fastener 121, for example, a plurality of screws as shown in fig. 2 and 3. That is, a plurality of fastening members 121 may be disposed below the exhaust duct 111, and a plurality of fastening holes 123 may be disposed at corresponding positions of the bottom plate 109, so that the fastening members 121 can be fastened to the fastening holes 123 at the corresponding positions. Through setting up like this, can fully guarantee the stability and the reliability of exhaust passage 111 to can guarantee the stability and the reliability of electric core, and then can improve the stability and the reliability of battery package.

As an alternative, fig. 5 is a schematic view of a partial structure of the battery pack case 100 provided in this embodiment. Referring to fig. 5, in the present embodiment, the exhaust channel 111 may be further bonded to the bottom plate 109, and a glue layer 127 is formed between the exhaust channel 111 and the bottom plate 109 to sufficiently ensure the stability of the exhaust channel 111 and the stability and reliability of the battery pack.

Of course, in other embodiments, other detachable matching manners, such as a matching manner of plugging and the like, may also be adopted between the exhaust channel 111 and the side beam 101, and between the exhaust channel 111 and the bottom plate 109, one of the exhaust channel 111 and the bottom plate 109 is provided with a plugging groove, and the other of the exhaust channel 111 and the bottom plate 109 is provided with a plugging portion, so that the plugging portion is plugged with the plugging groove, such as a matching manner of buckling and the like, and the stability of the exhaust channel 111 can be fully ensured, which is not limited in this embodiment.

The embodiment of the utility model provides an electric installation is still provided, it includes power consumption mechanism to and foretell battery package. The electricity utilization mechanism can be selected from a vehicle, a ship, a spacecraft and the like. The electricity utilization mechanism can supply power through the battery pack. Thus, it also has an advantage of high safety performance.

The embodiment of the utility model provides a still provide a equipment of manufacturing battery module, it is used for making foretell battery package. Which includes a providing module and a mounting module. The providing module is used for providing a battery pack box 100 and a plurality of battery cells, and the battery pack box 100 comprises a plurality of side beams 101, a bottom plate 109 and an exhaust channel 111; a plurality of side members 101 are enclosed to form an accommodating space 103, and both ends of the accommodating space 103 are provided with a first opening 105 and a second opening 107; the bottom plate 109 is disposed at the first opening 105 and used for closing the first opening 105; an air inlet hole 115 is formed in one side, facing the second opening 107, of the exhaust channel 111, and the air inlet hole 115 is used for communicating the exhaust channel 111 with the accommodating space 103 and is used for releasing pressure to the outside through the exhaust channel 111 when the battery cell is in thermal runaway; the mounting module is configured to enclose the side members 101 into the accommodating space 103, to dispose the bottom plate 109 at the first opening 105, to dispose the exhaust duct 111 at the bottom plate 109, and to stack the battery cells in the accommodating space 103. The equipment for manufacturing the battery module can be used for preparing the battery pack with higher safety performance.

It should be noted that, in the embodiment of the present invention, the apparatus for manufacturing battery module is an apparatus for providing and installing to form a battery pack, the structure and the operation principle of which are adjusted and changed along with the structural design of the battery pack, for example, when the battery pack includes a plurality of cells stacked together, the providing module includes a manufacturing structure for manufacturing the cells, the installing module includes a stacking structure for stacking the cells together, for example, when the bottom plate 109 of the battery pack case 100 is provided with the exhaust channel 111, the providing module includes a structure for providing the exhaust channel 111 on the bottom plate 109, and the installing module includes a safety valve 113 for opposing the air inlet 115 on the exhaust channel 111 to the safety valve 113 of the cells. To the equipment of making the battery module provide module and some other relevant structures outside the installing module, for example electric core and module washing structure, welded structure, module test and detection structure etc. the embodiment of the utility model is no longer repeated.

The embodiment of the utility model provides a following describes in detail installation process flow, theory of operation and beneficial effect of battery package:

when the battery pack is installed, the exhaust channel 111 is fastened on the bottom plate 109 by the fasteners 121, then the four side beams 101 are connected end to end and arranged on the bottom plate 109, and the duct opening of the exhaust channel 111 is communicated with the two exhaust holes 125; then, a plurality of battery cells are stacked and arranged in the battery pack case 100, and are supported on the exhaust channel 111, so that the safety valve 113 of each battery cell is opposite to the air inlet 115 corresponding to the exhaust channel 111, and one side of each battery cell where the safety valve 113 is arranged can seal the corresponding air inlet 115.

In the above process, on one hand, the air inlet hole 115 is formed in the upward position of the exhaust channel 111, so that the molten material sprayed during the thermal runaway of the battery core moves downward under the action of gravity and is discharged to the outside through the air inlet hole 115 for pressure relief, the splashing and accumulation of the molten material in the battery pack box 100 can be reduced, the influence on other battery cores can be reduced, the thermal runaway diffusion can be prevented, and the safety performance can be improved; on the other hand, when the battery core is out of control thermally, the air inlet hole 115 can directly release pressure to the outside through the exhaust channel 111, the pressure release speed is high, the reaction rate is high, and the safety performance can be further improved.

To sum up, the embodiment of the utility model provides a battery package box 100 and battery package, its structure that can directly pass through battery package box 100 self carries out the pressure release of exhausting, can improve the security performance. An embodiment of the utility model provides a power consumption device, it supplies power through foretell battery package. Therefore, the electric device has the advantage of high safety performance. An embodiment of the utility model provides an equipment of manufacturing battery package, it can make the battery package that obtains above-mentioned security performance height.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A battery pack case, comprising:

the side beams enclose an accommodating space, and a first opening and a second opening are formed at two ends of the accommodating space;

the bottom plate is arranged at the first opening and used for closing the first opening;

and the exhaust channel is arranged on the bottom plate and can be communicated with the outside, an air inlet is arranged on one side of the second opening, and the air inlet can be communicated with the exhaust channel and the accommodating space and is used for releasing pressure to the outside through the exhaust channel when the battery core is out of thermal control.

2. The battery pack case of claim 1, wherein:

a plurality of air inlet holes are formed in the exhaust channel, and each air inlet hole is arranged at intervals;

and/or the presence of a gas in the gas,

the bottom plate is provided with a plurality of exhaust channels, and each exhaust channel is provided with the air inlet.

3. The battery pack case according to claim 2, characterized in that:

in the direction from the first opening to the second opening, the exhaust channel comprises a first plate and a second plate which are arranged at intervals, and the air inlet is arranged on the second plate in a penetrating mode.

4. The battery pack case according to any one of claims 1 to 3, wherein:

the exhaust channel is adhered to the bottom plate;

or,

the exhaust passage is fastened to the base plate by a fastener;

or,

one of the exhaust channel and the bottom plate is provided with a plug-in groove, the other one of the exhaust channel and the bottom plate is provided with a plug-in part, and the plug-in part is plugged with the plug-in groove.

5. The battery pack case according to any one of claims 1 to 3, wherein:

the exhaust channel is connected and arranged between the two side beams which are arranged at intervals, the position of each side beam opposite to the exhaust channel is provided with an exhaust hole, and two ends of the exhaust channel are respectively communicated with the outside through the two exhaust holes;

or,

the side beams are internally provided with a communication chamber which is communicated with the outside in the circumferential direction, the communication chamber is provided with exhaust holes communicated with the outside, two ends of the exhaust channel are respectively connected with the two side beams, and the exhaust channel is communicated with the communication chamber.

6. The battery pack case of claim 5, wherein:

the end part of the exhaust channel is tightly connected with the adjacent side beam;

or,

the end part of the exhaust channel is spliced with the adjacent side beam;

or,

the peripheral edge of the end portion of the exhaust passage is bonded to the side member.

7. A battery pack, comprising:

the battery pack case of any one of claims 1 to 6;

the battery cell is arranged in the accommodating space, a safety valve of the battery cell is opposite to the air inlet hole or can stretch into the air inlet hole, and one side of the safety valve, which is arranged on the battery cell, is sealed with the air inlet hole.

8. The battery pack according to claim 7, wherein:

the battery pack comprises a plurality of battery cells which are stacked and arranged in the accommodating space;

the exhaust channel is provided with a plurality of air inlets matched with the number of the plurality of battery cells, and each safety valve is opposite to the corresponding air inlet or can extend into the corresponding air inlet.

9. The battery pack according to claim 7, wherein:

the air inlet hole and the safety valve are both of a waist-shaped structure, the radius of circular arc parts at two ends of the air inlet hole is R1, the length between two ends of the air inlet hole is L1, the radius of circular arc parts at two ends of the safety valve is R2, the length between two ends of the safety valve is L2, the safety valve is opposite to the central position of the corresponding air inlet hole, the distance from the edge of the arc part of the safety valve to the edge of the arc part of the air inlet hole is H1, and the distance from the edge of the straight part of the safety valve to the edge of the straight part of the air inlet hole is H2;

the size design of the air inlet hole and the safety valve meets any one of a first condition and a second condition, wherein the first condition is as follows: r1> R2, L2<2 (R1-R2) + L1, H1= R1-R2+ (L1-L2)/2, H2= R1-R2, with the proviso that two: r1> R2, L1> L2, 0-H1 < (L1-L2)/2, 0-H2 < (R1-R2).

10. The battery pack according to claim 7, wherein:

the safety valve is arranged on the end face of the battery cell in a protruding mode, one end, close to the first opening, of the safety valve extends into the corresponding air inlet hole, the end face, provided with the safety valve, of the battery cell is supported on the exhaust channel, and the corresponding air inlet hole is sealed;

or,

the safety valve is recessed in the end face of the battery cell, the safety valve and the air inlet hole are arranged at intervals, the battery cell is provided with the safety valve, one end of the safety valve is circumferentially supported on the exhaust channel, and the air inlet hole is sealed and corresponding to the safety valve.

11. The battery pack according to claim 7, wherein:

and a positive pole column and a negative pole column are arranged on one side, away from the safety valve, of the battery cell and close to the second opening.

12. An electric device, comprising:

an electricity utilization mechanism;

a battery pack according to any one of claims 7 to 11 for powering the electricity consuming mechanism.

13. An apparatus for manufacturing a battery pack, comprising:

the battery pack box comprises a plurality of side beams, a bottom plate and an exhaust channel; the side beams are enclosed into an accommodating space, and a first opening and a second opening are formed at two ends of the accommodating space; the bottom plate is arranged at the first opening and used for closing the first opening; an air inlet is formed in one side, facing the second opening, of the exhaust channel, can be communicated with the exhaust channel and the accommodating space, and is used for releasing pressure to the outside through the exhaust channel when the battery cell is out of control due to heat;

the installation module is used for enclosing the side beams into an accommodating space, is used for arranging the bottom plate at the first opening, is used for arranging the exhaust channel on the bottom plate, and is used for stacking the battery cells in the accommodating space.

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