CN218472237U - Insulating member for battery pack, battery pack and vehicle - Google Patents

Abstract

The utility model discloses an insulating part, battery package and vehicle for battery package, battery package includes casing and the group battery that is located the casing, and the casing includes a plurality of outer walls and at least one outer wall is formed with the inner chamber runner, and the group battery includes at least one battery, and the battery is equipped with the relief valve; the insulating part is suitable for being installed between the shell and the battery pack and used for limiting the airflow cavity, the airflow cavity is suitable for being communicated with the outside of the battery pack through an inner cavity runner of the shell, the insulating part is provided with an opening window communicated with the airflow cavity, a plugging plate is arranged at the opening window, the plugging plate is arranged to open the opening window when the pressure is larger than a set value, and the opening window is suitable for being arranged corresponding to a pressure release valve of the battery. The utility model discloses an insulating part for battery package can be isolated with the high-temperature gas that the battery produced and other spare parts in battery and the battery package, does benefit to the thermal runaway diffusion that reduces the battery, improves the security of battery package.

Description

Insulating member for battery pack, battery pack and vehicle

Technical Field

The utility model belongs to the technical field of the battery manufacturing technique and specifically relates to a battery package and vehicle that are used for insulating part, have this insulating part of battery package.

Background

At present, the safety of the power battery is always an industry pain point, and how to achieve the safety of the power battery without ignition and explosion is the research direction of various manufacturers at present. At present, the mainstream scheme is that the gas is exhausted in a cavity of a frame, high-temperature gas is cooled through long-distance flow in the cavity, and finally the gas is discharged out of a bag body through an explosion-proof valve. However, according to the scheme, after the explosion-proof valve of the battery is opened, the high-temperature gas ejected out of the battery in a runaway way generates a plurality of safety problems between the frame and the battery, such as the situations of high-voltage short circuit and continuous thermal runaway initiation, and the improvement space exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an insulating part for battery package, this insulating part is applicable to between the casing of battery package and the battery, can reduce the battery out of control back high-temperature gas and enter into the safety problem that exists in the space between frame and the battery.

According to the utility model discloses an insulating part for battery package, battery package includes casing and the group battery that is located in the casing, the casing includes a plurality of outer walls and at least one the outer wall is formed with the inner chamber runner, the group battery includes at least one battery, the battery is equipped with the relief valve; the insulating piece is suitable for being installed between the shell and the battery pack and used for limiting an airflow cavity, the airflow cavity is suitable for being communicated with the outside of the battery pack through an inner cavity runner of the shell, the insulating piece is provided with an opening window communicated with the airflow cavity, a blocking plate is arranged at the opening window and is arranged to open the opening window when the pressure is larger than a set value, and the opening window is suitable for being arranged corresponding to a pressure release valve of the battery.

According to the utility model discloses an insulating part for battery package sets up the insulating part between the casing of battery package and battery, can be with isolated between other zero portions in the high-temperature gas that the battery produced and battery and the battery package, and avoid the high-temperature gas that the battery of thermal runaway produced to kick-back towards other batteries under shells inner wall's effect, do benefit to the thermal runaway diffusion of avoiding the battery, and high-temperature gas can flow in order to play the effect of certain cooling in the air current intracavity, improve the security of battery package.

According to the utility model discloses an insulating part for battery package, the insulating part is including connecting portion and the passageway portion that links to each other, connecting portion be used for with the casing links to each other, the passageway portion is formed with towards deviating from the open concave region of one side of battery is regional, the air current chamber form in concave region department, open the window and locate the passageway portion.

According to the utility model discloses an insulating part for battery package, passageway portion includes intermediate lamella and bottom plate, connecting portion structure is the connecting plate, the connecting plate with the bottom plate buckle respectively connect in the both sides of intermediate lamella, just the bottom plate with the intermediate lamella is injectd the concave part region, open the window and locate the bottom plate.

According to some embodiments of the present invention, the bottom plate comprises a first sub-plate, and the first sub-plate is connected to the middle plate in a bent manner; or the bottom plate comprises a first sub-plate and a second sub-plate, the first sub-plate is connected with the middle plate in a bent mode, and the second sub-plate is connected with the first sub-plate and spaced from the middle plate in parallel.

According to the utility model discloses an insulating part for battery package, the shutoff board with open the inner wall junction of window and/or the shutoff board is equipped with the reduction region, the regional thickness of reduction is less than the thickness of shutoff board.

According to the utility model discloses an insulating part for battery package, the weakening region is including outer weakening region and interior weakening region, outer weakening region form in the shutoff board with between the inner wall of opening the window and encircle the shutoff board distributes, interior weakening region form in the shutoff board, just interior weakening region with outer weakening region links to each other.

According to the utility model discloses an insulating part for battery package of some embodiments, interior reduction region includes first reduction through-hole and second reduction through-hole, just first reduction through-hole with second reduction through-hole cross-connection.

According to the utility model discloses an insulating part for battery package, the reduction sheet metal orientation the side in the air current intracavity with the shutoff board orientation side parallel and level in the air current intracavity, the reduction sheet metal deviates from side in the air current intracavity compare in the shutoff board orientation side in the air current intracavity is inwards sunken.

According to the utility model discloses an insulating part for battery package, the thickness of shutoff board is less than the insulating part except open the thickness of window other parts.

According to the utility model discloses an insulating part for battery package, the insulating part be equipped with a plurality of be used for with casing detachably links to each other the connecting hole, and is a plurality of the connecting hole is followed the length direction interval distribution of insulating part.

The utility model also provides a battery package.

According to the utility model discloses battery package, be provided with any kind of above-mentioned embodiment be used for battery package's insulating part.

The utility model also provides a vehicle.

According to the utility model discloses the vehicle is provided with above-mentioned embodiment the battery package.

The vehicle, the battery pack and the insulator for the battery pack have the same advantages compared with the prior art, and are not described in detail herein.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of an insulator according to an embodiment of the present invention;

fig. 2 is a partial schematic view (from a side view near the battery) of an insulator according to an embodiment of the invention;

fig. 3 is a partial schematic view (side view away from the battery) of an insulator according to an embodiment of the invention;

fig. 4 is a schematic end view of an insulator according to an embodiment of the invention;

FIG. 5 isbase:Sub>A cross-sectional view taken at A-A in FIG. 4;

fig. 6 is an exploded view of an insulator, a frame, and a battery according to an embodiment of the present invention;

fig. 7 is an assembly view of a battery and insulator according to an embodiment of the present invention;

FIG. 8 is an enlarged view at B in FIG. 7;

fig. 9 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view at C-C of FIG. 9;

fig. 11 is an enlarged view at D in fig. 10.

Reference numerals:

the battery pack 1000 is provided with a battery pack,

the insulating member (100) is provided with a plurality of insulating parts,

connecting plate 11, connecting hole 111, middle plate 12, bottom plate 13, first sub-plate 131, second sub-plate 132, blocking plate 14, weakened area 15, weakened hole 151, first weakened through-hole 152, second weakened through-hole 153, weakened thin plate 154, airflow chamber 16, opening window 17,

a shell 200, a center sill 201, a bezel 202, a bottom plate 203,

the battery pack 300, the battery 301, the pressure release valve 302 and the plastic support 303.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 to 11, an insulator 100 for a battery pack according to an embodiment of the present invention is described, the battery pack 1000 includes a case 200 and a battery pack 300, the battery pack 300 is mounted in the case 200 such that the battery pack 300 can be charged and discharged in the case 200, and the insulator 100 is mounted between the battery pack 300 and the case 200. Wherein, the housing 200 comprises a plurality of outer walls, and an inner cavity flow channel is formed in at least one outer wall, the battery pack 300 comprises at least one battery 301, and the battery 301 of the battery pack 1000 can adopt a blade battery to increase the electric capacity.

As shown in fig. 1 to 11, an insulating member 100 for a battery pack according to an embodiment of the present invention, wherein the insulating member 100 may be made of a mica material.

The insulating member 100 is adapted to be mounted between the case 200 and the battery pack 300, and it is understood that the battery pack 300 is mounted in the case 200 with a certain mounting gap between the end of the battery pack 300 and the inner wall of the case 200, in which the insulating member 100 is disposed. The insulator 100 is used to define the airflow chamber 16, for example, the insulator 100 may be configured as a hollow structure to form the airflow chamber 16 therein; or after the insulating member 100 is mounted between the housing 200 and the battery pack 300, the insulating member 100 and the housing 200 together define the airflow chamber 16 at a side facing away from the battery pack 300, i.e., the airflow chamber 16 is open to the side facing away from the battery pack 300.

The insulating member 100 is provided with an opening window 17, the opening window 17 is provided with a blocking plate 14, the blocking plate 14 is configured to open the opening window 17 when the pressure is greater than a set value, and the opening window 17 is correspondingly arranged with the pressure release valve 302 of the battery pack 300, if the opening window 17 and the pressure release valve 302 are distributed oppositely, so that when the pressure release valve 302 is opened, the opening window 24 impacts the blocking plate 14 to open the opening window 17, the gas in the battery 15 flows into the gas flow chamber 16, the gas flow chamber 16 is communicated with the inner chamber flow channel of the housing 200, the gas flow chamber 16 can be communicated with the outside of the battery pack 1000 through the inner chamber flow channel of the housing 200, so that the gas in the gas flow chamber 16 can be discharged out of the housing 200 through the inner chamber flow channel, and further, the high-temperature gas flow can be discharged out of the battery pack 1000. It should be noted that the battery pack 300 includes a plurality of batteries 301, and each battery 301 is provided with a pressure relief valve 302. The utility model discloses in, the inner chamber runner intercommunication of air current chamber 16 and casing 200 can be intercommunication promptly when the battery 301 in group battery 300 does not take place the high-temperature gas blowout, also can be set up the structure that similar window 17 was opened between inner chamber runner and air current chamber 16, and battery 301 in group battery 300 does not take place the high-temperature gas blowout time and does not communicate or only communicate through very little gap, nevertheless communicates when the battery 301 in group battery 300 takes place the high-temperature gas blowout. The fact that the airflow chamber 16 can communicate with the outside of the battery pack 1000 through the inner chamber flow channel of the housing 200 may mean that, when the airflow chamber 16 needs to communicate with the outside of the battery pack 1000, for example, when the battery 301 in the battery pack 300 is sprayed with high-temperature gas and the high-temperature gas needs to be discharged from the battery pack, the inner chamber flow channel may serve to communicate the airflow chamber 16 with the outside of the battery pack 1000, but when the battery 301 in the battery pack 300 is not sprayed with high-temperature gas, the airflow chamber 16 may not communicate with the outside of the battery pack 1000.

It should be noted that, when the battery pack 1000 is in a normal operation, the opening window 17 is in a closed state or only a small part of the gap is open, and when the battery 301 in the battery pack 300 is in thermal runaway, high-temperature gas generated by the battery 301 breaks through the pressure release valve 302 and opens the opening window 17, at this time, the opening window 17 communicates the airflow chamber 16 with the space where the battery pack 300 is located, so that the high-temperature gas generated by the thermal runaway of the battery 301 can enter the airflow chamber 16 from the opening window 17 to be cooled in the airflow chamber 16 or be discharged from the airflow chamber 16. The opening window 17 is opposite to or adjacent to a pressure release valve 302 of the battery 301, and when the battery 301 is in thermal runaway, high-temperature gas generated by the battery 301 is sprayed out from the pressure release valve 302 to impact the opening window 17 and enter the airflow cavity 16.

Thus, the airflow chamber 16 of the insulator 100 for a battery pack can communicate with the space where the battery pack 300 is located only at the opening window 17, that is, in the event of thermal runaway of the actual battery 301, high-temperature gas flowing into the airflow chamber 16 can be spaced apart from the battery pack 300 under the insulating action of the insulator 100.

In this way, the high-temperature gas generated by the thermal runaway battery 301 can enter the airflow cavity 16 from the corresponding opening window 17, so that the high-temperature gas is isolated from other parts in the battery pack 1000 as much as possible through the insulating member 100, gas fleeing is avoided, and particularly, the high-temperature gas generated by the thermal runaway battery 301 and the sparks accompanying in the gas can be prevented from flowing to the adjacent or spaced normal batteries 301, and thermal runaway diffusion is avoided; and, the space between the relief valves 302 of the adjacent batteries 301 is small, the high-temperature gas generated by the battery 301 in thermal runaway is liable to rebound to other batteries 301 under the action of the inner wall of the case 200, and the rebound of the high-temperature gas can be effectively prevented by providing the insulator 100 for the battery pack; furthermore, it opens to appear thermal runaway explosion-proof valve at battery 301, and opens window 17 pressurized opening back, and the inside electrified material of battery 301 is likely to follow high-temperature gas and discharges like copper aluminium foil, and the metallics leads to the short circuit in the overlap joint, the utility model provides an insulating nature for insulating part 100 of battery package is good, and the size of opening window 17 can the separation spill over of great material, can paste one deck mica paper simultaneously on casing 200 in order to form the insulating cavity of sealing high temperature resistant with insulating part 100 that is used for the battery package, prevents that the short circuit arc discharge.

According to the utility model discloses an insulating part 100 for battery package sets up insulating part 100 between battery package 1000's casing 200 and group battery 300, and the heat that can avoid thermal runaway's battery 301 to produce is kick-backed towards other battery 301 under the effect of casing 200 inner wall, does benefit to the thermal runaway diffusion that reduces battery 301, and high temperature gas can flow in airflow cavity 16 in order to play the effect of certain cooling, improves battery package 1000's security.

In some embodiments, as shown in fig. 1 to 4, the insulating member 100 includes a connecting portion and a channel portion connected to each other, and the connecting portion and the channel portion may be integrally formed to ensure the connection strength between the connecting portion and the channel portion, improve the overall structural strength of the insulating member 100, prevent the problem of connection fracture between the connecting portion and the channel portion when the battery pack 1000 is subjected to thermal runaway high-temperature gas impact on the opening window 17, and ensure that the structural state of the insulating member 100 is stable.

The connecting portion is used for connecting with the housing 200, for example, the connecting plate 11 is fixed to fit with the inner peripheral wall of the housing 200, and in actual design, the connecting plate 11 can be detachably connected with the inner peripheral wall of the housing 200 through a connecting member, so that the insulating member 100 is fixedly installed on the housing 200, and the insulating member 100 can be flexibly detached from the housing 200 and the battery pack 1000, thereby facilitating later maintenance and replacement of the insulating member 100.

The channel part is formed with a recess region opened toward a side facing away from the battery pack 300, as shown in fig. 4, the connection part is connected to an upper side of the channel part, and a left side of the channel part is formed with a recess region opened toward the left side, so that the connection part is fixed in contact with the case 200 after the insulating member 100 is connected to the inner wall of the case 200, the channel part is spaced apart from the inner wall of the case 200 at the recess region to form the airflow chamber 16, in other words, the airflow chamber 16 is formed at the recess region of the channel part. Therefore, the insulating member 100 is fixedly connected to the housing 200 through the connecting portion, and the airflow chamber 16 is defined by the channel portion and the housing 200, so that the channel portion can isolate the high-temperature gas from the battery pack after the high-temperature gas in thermal runaway enters the airflow chamber 16.

The opening window 17 is arranged on the channel part, wherein, during actual design, the opening window 17 is arranged on one side of the channel part close to the battery pack 300, so that when the battery 301 is out of control due to heat, high-temperature gas can impact the opening window 17 nearby, and further the high-temperature gas can be discharged into the airflow cavity 16 in time, thereby avoiding the high-temperature gas from staying in the battery 301 and the battery pack 300 for too long time, and improving the safety of the battery pack 300.

In some embodiments, the connection portion is configured as a connection plate 11, as shown in fig. 1 to 4, the connection plate 11 is configured as a flat plate, and the connection plate 11 is provided with a connection hole 111, the connection hole 111 penetrates in a thickness direction of the connection plate 11, for example, in a left-right direction in fig. 4, so that when the insulation member 100 is connected to the inner wall of the housing 200, the connection plate 11 is attached to the inner wall of the housing 200, and a connection member penetrates through the connection hole 111 to fix the connection plate 11 and the housing 200 relatively, thereby improving the connection stability.

The channel part comprises a middle plate 12 and a bottom plate 13, and the connecting plate 11 and the bottom plate 13 are respectively connected with two sides of the middle plate 12 in a bending way. As shown in fig. 4, the middle plate 12 is configured as a flat plate, and the middle plate 12 is disposed in a horizontal direction as in the left-right direction in fig. 4, the connection plate 11 is connected to one side of the middle plate 12 and extends upward, the bottom plate 13 is connected to the other side of the middle plate 12 and is disposed below the middle plate 12, and the bottom plate 13 and the middle plate 12 define a concave region. Thus, in actual installation, the connecting plate 11 is fixed above the intermediate plate 12 against the inner wall of the housing 200, and the intermediate plate 12 defines the airflow chamber 16 with the bottom plate 13 and the inner wall of the housing 200.

And, the opening window 17 is provided in the bottom plate 13, if the opening window 17 penetrates in the left-right direction of the bottom plate 13, and as shown in fig. 4 and 5, the opening window 17 is provided on the right side of the bottom plate 13, so that when the opening window 17 is opened, the opening window 17 communicates the left and right sides of the bottom plate 13, thereby achieving communication between the airflow chamber 16 and the internal space of the battery pack 300, and facilitating discharge of high-temperature airflow in the thermal runaway battery 301.

In some embodiments, the bottom plate 13 includes a first sub-plate 131, and the first sub-plate 131 is connected to the middle plate 12 by bending. That is, the bottom plate 13 is configured as a flat plate, and as shown in fig. 8 and 11, the first sub-plate 131 extends vertically, the upper end of the first sub-plate 131 is connected to one side of the middle plate 12 and extends downward, the opening window 17 is disposed on the first sub-plate 131, and when the battery pack is actually mounted, the first sub-plate 131 and the plastic bracket 303 at the end of the battery pack 300 can be fixedly connected, so that high-temperature gas generated by the battery 301 in thermal runaway can flow to the opening window 17 under the guiding action of the plastic bracket 303, and then the air flow can be discharged from the opening window 17 through the first sub-plate 131.

Alternatively, in other embodiments, the bottom plate 13 includes a first sub-plate 131 and a second sub-plate 132, the first sub-plate 131 is connected to the middle plate 12 by bending, and the second sub-plate 132 is connected to the first sub-plate 131 and is spaced apart from the middle plate 12 in parallel. That is, the bottom plate 13 may be configured as a two-part plate bent and connected, as shown in fig. 4, the first sub-plate 131 extends vertically, the upper end of the first sub-plate 131 is connected to one side of the middle plate 12 and extends downward, the opening window 17 is provided on the first sub-plate 131, and at the same time, the second sub-plate 132 is connected to the lower side of the first sub-plate 131, and both the second sub-plate 132 and the middle plate 12 extend in the horizontal direction. Thus, the channel portion of this embodiment is configured in a shape of "Contraband" so as to form a loop path after being assembled with the case 200, and thus, when the battery 301 thermally runs away, high-temperature gas ejected from the relief valve 302 can be confined between the intermediate plate 12, the first sub-plate 131, the second sub-plate 132, and the case 200 and then discharged to the outside of the battery pack 1000.

It should be noted that, the housing 200 includes an outer wall and a middle beam 201, the outer wall includes a frame 202 and a bottom plate 203, the frame 202 is installed above the bottom plate 203 and defines an installation space with the bottom plate 203, the middle beam 201 is installed in the installation space and divides the installation space into a plurality of sub-installation cavities, the plurality of battery packs 300 are respectively installed in the plurality of sub-installation cavities, an inner cavity runner is formed in the frame 202, the insulating member 100 is arranged between the end portions of the frame 202 and the battery packs 300, meanwhile, an inner cavity runner can be formed in the middle beam 201, and the insulating member 100 can be arranged between the end portions of the middle beam 201 and the battery packs 300.

The insulating member 100 of the embodiment in which the bottom plate 13 includes the first sub-plate 131 and the second sub-plate 132 may be disposed between the end of the battery pack 300 and the middle beam 201, i.e., the first sub-plate 131 may be connected to a plastic bracket 303 disposed at the end of the battery pack 300, and the lower end of the first sub-plate 131 is connected to the second sub-plate 132, and the second sub-plate 132 is supported to the bottom plate 203; the insulating member 100 of the embodiment in which the bottom plate 13 includes only the first sub-plate 131 may be disposed between the end of the battery pack 300 and the inner circumferential wall of the rim 202, that is, the first sub-plate 131 may be connected to the plastic bracket 303, and the lower end of the first sub-plate 131 is supported by the bottom plate 203 or the extension flange of the rim 202.

In some embodiments, a weakened area 15 is provided at the connection between the blocking plate 14 and the inner wall of the opening window 17 and/or the blocking plate 14, and the weakened area 15 is used for weakening the connection strength between the blocking plate 14 and the inner wall of the opening window 17 and weakening the structural strength of the blocking plate 14 itself, so that the opening window 17 can be opened after the blocking plate 14 is impacted by high-temperature airflow generated by thermal runaway of the battery, and the high-temperature airflow can be discharged.

In some embodiments, the weakened areas include an outer weakened area and an inner weakened area. Wherein, outer weakening area is formed between shutoff board 14 and the inner wall of opening window 17 and encircles shutoff board 14 and distributes, has reduced the joint strength between shutoff board 14 and the inner wall of opening window 17 through setting up outer weakening area promptly to when high temperature air current assaults shutoff board 14, guarantee to open window 17 in time, realize the effective discharge of high temperature air current.

Wherein, the outer weakening area and the inner weakening area are arranged, so that the weakening area is constructed into a 'ri' shape or a 'tian' shape.

Interior weakening area is formed in shutoff board 14, makes shutoff board 14 cut apart into a plurality of regions through weakening area in setting up promptly to make the joint strength weakening between a plurality of regions, thereby make shutoff board 14 after receiving the impact of high temperature air current, self produces the structure and breaks, thereby makes opening window 17 and opens fast, guarantees that the air current in time discharges.

And the inner weakened area is connected with the outer weakened area, i.e. when the blocking plate 14 is impacted by airflow, the opening window 17 is convenient to open quickly.

In some embodiments, the inner weakened area includes a first weakened through-hole 152 and a second weakened through-hole 153, the first weakened through-hole 152 extending vertically, the second weakened through-hole 153 extending laterally, and the first weakened through-hole 152 and the second weakened through-hole 153 being cross-connected. As shown in fig. 2 and 3, the first weakening through hole 152 and the second weakening through hole 153 penetrate in the thickness direction of the blocking plate 14, the first weakening through hole 152 extends in the up-down direction as viewed in fig. 2, the second weakening through hole 153 extends in the left-right direction as viewed in fig. 2, and the first weakening through hole 152 and the second weakening through hole 153 are arranged in a crisscross.

Thereby, the first and second weakening through holes 152 and 153 divide the blocking plate 14 into 4 parts, and the four parts are respectively connected to the inner wall of the opening window 17 to relatively space the four parts, so that the blocking plate 14 can be broken in time when it is subjected to an external impact.

Thus, when the thermal runaway of the battery 301 occurs, the blocking plate 14 is impacted by the high-temperature gas, and the blocking plate 14 is rapidly separated at the first and second weakening through holes 152 and 153, thereby opening the opening window 17 to communicate the airflow chamber 16 with the internal space of the battery pack 300.

In some embodiments, the outer weakened area includes multiple sections of weakened sheets 154 and multiple sections of weakened holes 151, and the multiple sections of weakened sheets 154 and multiple sections of weakened holes 151 alternate in the circumferential direction of the closure panel 14. That is, as shown in fig. 2 and 3, in the circumferential direction of the plugging plate 14, the plurality of sections of weakened plates 154 and the plurality of sections of weakened holes 151 are connected in sequence to form a ring shape, wherein the weakened holes 151 are elongated holes and are arranged in four sections, the weakened plates 154 are configured as elongated plates and are arranged in four sections, and the four sections of weakened holes 151 and the four sections of weakened plates 154 are alternately distributed in the circumferential direction of the plugging plate 14.

Therefore, the blocking plate 14 can be connected with the inner wall of the opening window 17 at a plurality of positions in the circumferential direction and spaced at a plurality of positions, so that when the blocking plate is impacted by high-temperature airflow, the blocking plate 14 can be opened in time to facilitate quick discharge of the high-temperature gas.

In some embodiments, the thickness of the blocking plate 14 is smaller than the thickness of the insulating member 100, so that the structural strength of the blocking plate 14 is smaller than that of the insulating member 100, and thus, the thickness of the weakened region 15 is much smaller than that of the insulating member 100, thereby facilitating that, in case of thermal runaway of the battery 301, high-temperature gas can effectively break through the weakened region 15 in time, and further push the blocking plate 14 to open the opening window 17.

In some embodiments, the side of the weakened sheet 154 facing into the airflow chamber 16 is flush with the side of the blocking plate 14 facing into the airflow chamber 16, as shown in fig. 3, the side of the weakened sheet 154 facing into the airflow chamber 16 is flush with the blocking plate 14 without a surface difference, and the side of the weakened sheet 154 facing away from the airflow chamber 16 is recessed inward compared to the side of the blocking plate 14 facing away from the airflow chamber 16, i.e., the weakened sheet 154 is a surface difference from the blocking plate 14 on the side facing away from the airflow chamber 16, as shown in fig. 2.

That is, the portion of the weakened sheet 154 that is concavely weakened is disposed on the outer side of the insulating member 100, i.e., the side facing away from the airflow chamber 16, so that the thickness of the weakened sheet 154 is smaller than the thickness of the blocking plate 14, so that the blocking plate 14 can be easily broken from the outer side of the insulating member 100 when the blocking plate 14 is impacted by the high-temperature gas, and the high-temperature gas can smoothly enter the airflow chamber 16. It should be noted that, with this design, when the blocking plate 14 performs airflow impact from the airflow cavity 16, the phenomenon of stress concentration is not likely to occur, the required impact force is larger, and the impact is turned back after the gas enters the insulating member 100 and is weakened to some extent, so the rebound impact cannot break the opening window 17, and thus the high-temperature gas can be constrained to flow inside the insulating member 100, and the rebound prevention effect is achieved.

The opening window 17 is arranged opposite to the pressure release valve 302 of the battery pack 300, namely, high-temperature gas generated by thermal runaway of the battery 301 can directly impact the opening window 17 after breaking the pressure release valve 302, so that the high-temperature gas can be directly discharged from the opening window 17, the stop stroke of the high-temperature gas in the gap between the insulating member 100 and the battery pack 300 is reduced, and the high-temperature gas can be smoothly discharged.

In a specific design, as shown in fig. 1, the insulating member 100 is provided with a plurality of opening windows 17, the plurality of opening windows 17 are distributed at intervals in the length direction of the insulating member 100, as shown in fig. 6 and 7, the battery pack 300 includes a plurality of batteries 301, the plurality of batteries 301 are sequentially stacked and distributed, and each battery 301 is provided with one pressure release valve 302. The plurality of opening windows 17 are distributed in one-to-one correspondence with the pressure release valves 302 of the plurality of batteries 301, so that when thermal runaway occurs in any one of the batteries 301, generated high-temperature gas can enter the airflow cavity 16 of the insulating member 100 through the corresponding opening window 17, thermal runaway diffusion is well prevented, and the safety of the battery pack 1000 is improved.

In some embodiments, the insulating member 100 is provided with a plurality of coupling holes 111, the plurality of coupling holes 111 are for detachably coupling with the case 200, and the plurality of coupling holes 111 are spaced apart along the length direction of the insulating member 100. As shown in fig. 1, the plurality of connection holes 111 are disposed in the connection plate 11, and the plurality of connection holes 111 are uniformly spaced apart in a length direction of the connection plate 11, and the connection plate 11 may be connected and fixed with the housing 200 through connection members respectively disposed through the plurality of connection holes 111, so as to improve connection stability between the insulating member 100 and the housing 200.

The utility model also provides a battery package 1000.

According to the utility model discloses battery package 1000 is provided with any kind of above-mentioned embodiment for insulating part 100 of battery package, set up insulating part 100 between casing 200 and group battery 300 of battery package 1000, can play isolated effect between casing 200 and group battery 300, and avoid the heat that battery 301 out of control of heat produced to kick-back towards other battery 301 under the effect of casing 200 inner wall, do benefit to the thermal runaway diffusion that reduces battery 301, and high temperature gas can flow in airflow cavity 16 in order to play the effect of certain cooling, improve battery package 1000's security.

The utility model also provides a vehicle, a serial communication port is provided with battery package 1000 in the above-mentioned embodiment, through setting up this battery package 1000, can guarantee that the high-temperature gas that battery pack 300 in the battery package 1000 produced when thermal runaway discharges effectively, and is doing benefit to the isolated of realizing high-temperature gas and battery pack 300, reduces high-temperature gas's temperature, reduces impact energy, guarantees that the gas in the battery package 1000 discharges safely, and then promotes whole car security.

Wherein, it is required to explain, in the length direction, the width direction and the thickness direction of the structure that points to in the utility model discloses, the ascending size in length direction of structure is greater than the ascending size in width direction, and all is greater than the ascending size in thickness direction, and length direction, width direction and thickness direction quadrature each other.

1. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

2. In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

3. In the description of the present invention, "a plurality" means two or more.

4. In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

5. In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. An insulator (100) for a battery pack, wherein the battery pack (1000) comprises a housing (200) and a battery pack (300) positioned in the housing (200), the housing (200) comprises a plurality of outer walls, an inner cavity flow channel is formed in at least one outer wall, the battery pack (300) comprises at least one battery (301), and the battery (301) is provided with a pressure relief valve (302);

the insulating piece (100) is suitable for being installed between the shell (200) and the battery pack (300), the insulating piece (100) is used for limiting an airflow cavity (16), the airflow cavity (16) is suitable for being communicated with the outside of the battery pack (1000) through an inner cavity flow channel of the shell (200), the insulating piece (100) is provided with an opening window (17) communicated with the airflow cavity (16), a blocking plate (14) is arranged at the opening window (17), the blocking plate (14) is arranged for opening the opening window (17) when the pressure is larger than a set value, and the opening window (17) is suitable for being arranged corresponding to a pressure relief valve (302) of the battery (301).

2. The insulating member (100) for a battery pack according to claim 1, wherein the insulating member (100) includes a connecting portion for connecting with the case (200) and a channel portion formed with a recessed area open to a side facing away from the battery pack (300), the airflow chamber (16) being formed at the recessed area, the opening window (17) being provided at the channel portion.

3. The insulator (100) for a battery pack according to claim 2, wherein the channel portion includes a middle plate (12) and a bottom plate (13), the connecting portion is configured as a connecting plate (11), the connecting plate (11) and the bottom plate (13) are respectively connected to both sides of the middle plate (12) in a bent manner, and the bottom plate (13) and the middle plate (12) define the recess region, and the opening window (17) is provided in the bottom plate (13).

4. The insulator (100) for a battery pack according to claim 3, wherein the bottom plate (13) comprises a first sub-plate (131), the first sub-plate (131) being bent and connected with the middle plate (12);

or the bottom plate (13) comprises a first sub-plate (131) and a second sub-plate (132), the first sub-plate (131) is connected with the middle plate (12) in a bending mode, and the second sub-plate (132) is connected with the first sub-plate (131) and is spaced from the middle plate (12) in parallel.

5. The insulating member (100) for battery packs according to claim 1, wherein the connection of the closure plate (14) to the inner wall of the opening window (17) is provided with a weakened area (15) and/or the closure plate (14) is provided with a weakened area (15);

the thickness of the weakened region (15) is less than the thickness of the closure panel (14).

6. The insulating member (100) for battery packs according to claim 5, wherein the weakened areas comprise outer weakened areas formed between the closure plate (14) and the inner wall of the opening window (17) and distributed around the closure plate (14) and inner weakened areas formed in the closure plate (14) and connected to the outer weakened areas.

7. The insulating member (100) for battery packs according to claim 6, wherein the inner weakened area comprises a first weakened through hole (152) and a second weakened through hole (153), and the first weakened through hole (152) and the second weakened through hole (153) are connected in a vertical cross.

8. The insulating member (100) for battery packs according to claim 6, wherein the outer weakened area comprises a plurality of pieces of weakened sheets (154) and a plurality of pieces of weakened holes (151), the plurality of pieces of weakened sheets (154) and the plurality of pieces of weakened holes (151) being alternately arranged in the circumferential direction of the blocking plate (14).

9. The insulation (100) for a battery pack according to claim 8, wherein the side of the weakened sheet (154) facing into the airflow cavity is flush with the side of the blanking panel (14) facing into the airflow cavity, and the side of the weakened sheet (154) facing away from the airflow cavity is recessed inwardly compared to the side of the blanking panel (14) facing away from the airflow cavity.

10. The insulator (100) for a battery pack according to claim 1, wherein the thickness of the blocking plate (14) is smaller than the thickness of the insulator (100) except for the opening window (17).

11. The insulating member (100) for a battery pack according to claim 1, wherein the insulating member (100) is provided with a plurality of coupling holes (111) for detachably coupling with the case (200), the plurality of coupling holes (111) being spaced apart along a length direction of the insulating member (100).

12. A battery pack (1000), characterized in that an insulating member (100) for a battery pack according to any one of claims 1 to 11 is provided.

13. A vehicle characterized by being provided with the battery pack (1000) recited in claim 12.

Images