CN217822989U - Battery pack, battery module and electric equipment - Google Patents

Abstract

The utility model discloses a battery pack, battery module and consumer, this battery pack includes: the battery pack comprises a plurality of batteries, a plurality of connecting rods and a plurality of connecting rods, wherein the batteries are stacked along the height direction perpendicular to the batteries to form a battery pack, a top cover of each battery is provided with a mounting hole, and the battery is provided with a boss surrounding the periphery of the mounting hole; gao Wenpian, the high temperature resistant sheet is arranged on the top of the battery pack and covers the mounting hole; the high-temperature-resistant sheet is provided with a plurality of convex parts protruding outwards in the direction far away from the top of the battery, each convex part corresponds to each boss one to one, and each boss is correspondingly positioned in the corresponding convex part. Because the battery pack also comprises the high-temperature resistant sheet, and the high-temperature resistant sheet covers the top cover of each battery pack and shields the mounting holes on the top cover of each battery, high-temperature substances from other batteries can be prevented from entering the batteries from the mounting holes. Under the condition that one battery is in thermal runaway, other batteries cannot be affected by spread to generate chain reaction, and the probability of thermal runaway diffusion is reduced.

Description

Battery pack, battery module and electric equipment

Technical Field

The embodiment of the utility model provides a relate to battery technical field, in particular to battery pack, battery module and consumer.

Background

In recent years, the rapid rise of new energy automobiles brings great promotion effects on the sustainable development of society and the harmonious coexistence of human beings and the environment. Among various conceptual new energy vehicles, electric vehicles have been technically mass-produced, and are receiving more and more attention and favor with government support. As a solution to the energy and environmental problems, the key technology in electric vehicles is to replace the rechargeable battery used by gasoline-fueled engines as the power source.

The existing rechargeable battery module comprises a plurality of batteries which are connected in a battery shell through a proper series-parallel connection structure, so that the design not only can meet the relatively high energy density requirement of the electric automobile, but also can flexibly adjust the series-parallel connection mode in the batteries according to different design requirements of various automobiles, and the practicability is high. And when one of the batteries is out of control due to heat, other batteries can continue to work normally, and the service life of the whole battery module is ensured.

SUMMERY OF THE UTILITY MODEL

However, in actual research and development, the inventor found that when thermal runaway of a battery occurs, gaseous and liquid reaction substances are generated and generate a great amount of reaction heat, and the combination of the gaseous and liquid reaction substances may cause the original external package structure of the battery to be damaged. The generated gaseous and liquid reaction substances are ejected from the inside of the battery, and the reaction heat is also conducted to the surroundings, thereby causing secondary influence on the adjacent battery. In particular, it is easy to cause damage to the mechanical structure of the battery by high-temperature substances generated by thermal runaway breaking the outer coating structure of the battery and splashing to the cover plate of the adjacent battery. Even high-temperature substances enter the interior of the adjacent batteries through the mounting holes of the adjacent batteries, so that thermal runaway also occurs in the adjacent batteries, chain reaction is caused, and finally even fire is caused.

The embodiment of the utility model provides a battery pack, battery module and consumer to when the thermal runaway takes place, reduce chain reaction between the battery, prevent such serious occurence of failure of fire, guaranteed holistic security of battery and stability, further increase of service life.

In order to solve the above technical problem, an embodiment of the present invention provides a battery pack, which includes: the battery pack comprises a plurality of batteries, a plurality of connecting rods and a plurality of connecting rods, wherein the batteries are stacked along the height direction perpendicular to the batteries to form a battery pack, a top cover of each battery is provided with a mounting hole, and a boss surrounding the periphery of the mounting hole is arranged on each battery; gao Wenpian, the high temperature resistant sheet is arranged on the top of the battery pack and covers the mounting hole; the high-temperature resistant sheet is provided with a plurality of convex parts protruding outwards in the direction far away from the top of the battery, each convex part corresponds to each boss one by one, and each boss is correspondingly positioned in the corresponding convex part.

In one embodiment, the protrusion comprises a plurality of protrusions spaced apart from each other, each protrusion protrudes outward away from the top of the battery, and at least one boss is correspondingly disposed in each protrusion; or the convex part is an integral body, and each boss is positioned in the convex part as the integral body.

In one embodiment, the protrusion penetrates the high temperature-resistant sheet in a width direction of the battery.

In one embodiment, the high temperature resistant sheet includes: a main body portion covering the mounting hole of each battery and each boss; the pair of first extension sections are oppositely arranged at two sides of the main body part, and the first extension parts extend from the main body part to the bottom of the battery; and the pair of second extension sections correspond to the pair of first extension sections one by one, extend along the direction far away from the lug boss from the corresponding first extension sections and are attached to the upper surface of the battery.

In one embodiment, the pair of first extending sections is oppositely arranged on two sides of the main body part along the length direction of the battery.

In an embodiment, the high temperature resistant sheet has a plurality of weak portions, each of the weak portions corresponds to each of the mounting holes, and each of the weak portions is disposed above the corresponding mounting hole.

Because the weak part of the high-temperature resistant sheet is positioned above the mounting hole, the weak part can be broken under the condition of high temperature and high pressure generated in the battery, a channel for the high temperature and high pressure inside the battery to be discharged outwards is formed, and the battery is prevented from explosion and ignition. That is to say, through the utility model discloses a high temperature piece can be when guaranteeing the explosion-proof valve of a battery self and the pressure release function normal play effect originally, prevents that it from receiving the thermal runaway influence of other batteries and the chain reaction that leads to. The safety and stability of the battery as a whole are improved.

In one embodiment, the weakened portion is a crack, score, or plurality of holes; or, the weakened portion comprises at least 2 line-shaped structures, wherein at least two line-shaped structures intersect or extend at an intersection.

In one embodiment, the thickness of the part of the high temperature resistant sheet above each mounting hole is 0.2mm to 1mm; or the part of the high-temperature resistant sheet above each mounting hole is separated from the boss by a preset distance.

In one embodiment, a preset distance between the lower surface of the part of the high temperature resistant sheet above each mounting hole and the upper surface of the boss is 0.09mm to 0.3mm; and/or the high-temperature resistant sheet is hot riveted, glued or fixed on the battery pack by adopting a screw.

The utility model also provides a battery module, battery module includes: a module housing; in the battery pack, the battery pack is disposed in the module housing.

The invention also provides electric equipment, which comprises the battery module; or, the electric equipment comprises the battery pack.

Through the above technical scheme of the utility model, because battery pack still includes high temperature resistant piece to this high temperature resistant piece covers on each group battery top cap, and shields the mounting hole on the top cap of each battery, consequently can block that the high temperature material that comes from other batteries gets into in the battery from the mounting hole. Therefore, under the condition that one battery is in thermal runaway, other batteries cannot be affected by spread to generate chain reaction, and the probability of thermal runaway diffusion is reduced.

In addition, the high-temperature resistant sheet is also provided with the convex part, and the boss on the top cover of the battery is positioned in the convex part, so that the position interference between the boss and the high-temperature resistant sheet can be avoided. In addition, since the high temperature resistant sheet is generally brittle, the high temperature resistant sheet is easily damaged by the boss without the provision of the projecting portion, and therefore, the utility of the battery module can be effectively improved by providing the projecting portion in the present application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural view of a battery according to a first embodiment of the present invention;

fig. 2 is an exploded view of a battery according to a first embodiment of the present invention (the battery cell is absent in the exploded view);

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is an assembly view of a battery pack according to a first embodiment of the present invention;

fig. 5 is an exploded view of a battery pack according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a high temperature resistant sheet according to a first embodiment of the present invention;

fig. 7 is an assembly view of the battery module according to the first embodiment of the present invention, in which the projection includes a plurality of projections;

fig. 8 is an assembly view of the battery module according to the first embodiment of the present invention, in which the protruding portion is formed as a single body.

Description of the reference numerals:

1. a battery; 11. a top cover; 111. mounting holes; 12. a housing; 121. an opening; 13. a protective film; 14. an explosion-proof valve; 15. A positive post; 16. a negative pole post; 17. a liquid injection hole; 18. a boss; 2. a battery pack; 21. the top of the battery pack; 3. gao Wenpian resistance; 31. a projection; 311. a protrusion; 32. a main body portion; 33. a first extension section; 34. a second extension segment; 35. a weakened portion; a. the height direction of the battery; b. the width direction of the battery; c. the length direction of the battery.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following describes each embodiment of the present invention in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

Various embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation.

In the following description, the height direction of the battery is a, the width direction of the battery is b, and the length direction of the battery is c.

A first embodiment of the present invention will be described below with reference to the accompanying drawings, in which fig. 1 shows an assembly view of a battery 1 in a battery pack of the first embodiment, and fig. 2 shows an exploded view of the battery 1 in the battery pack of the first embodiment. As shown in fig. 1 and 2, the battery 1 includes a top cover 11 and a case 12 with an upper opening 121, the top cover 11 is disposed at the opening 121 of the case 12 and seals the opening 121, the shape of the top cover 11 is matched with the shape of the opening 121 of the case 12, in this embodiment, the top cover 11 is long, correspondingly, the opening 121 of the case 12 is also long, a plurality of battery cells are disposed in a sealed space formed by the case 12 and a cover plate, and the battery cells are closely arranged inside the case 12 and electrically connected with each other to jointly form a charging and discharging assembly of the battery 1.

It should be noted that, in some embodiments, the shapes of the top cover 11 and the housing 12 may also be adaptively adjusted according to needs, for example, the top cover 11 and the opening 121 may be both square or polygonal, and the like, as long as the shape and arrangement of the battery cells may also be adaptively adjusted without departing from the scope of the present invention.

As shown in fig. 2, the top cover 11 has a mounting hole 111, the mounting hole 111 is a through hole, and a protective film 13 may be attached to the mounting hole 111 as necessary, and the protective film 13 covers the mounting hole 111. The explosion-proof valve 14 can be disposed in or below the mounting hole 111, the explosion-proof valve 14 can be disposed in the mounting hole 111 or in the housing 12 (i.e., below the mounting hole 111), and the specific position of the explosion-proof valve 14 can be adjusted as needed, but, of course, in some embodiments, the explosion-proof valve 14 may not be needed. Specifically, the explosion-proof valve 14 is also called a negative pressure explosion-proof door, and the device adopts a magnetic automatic opening and closing technology, so that the action pressure is accurate, and the device automatically resets after action. In practical cases, when thermal runaway occurs inside the battery 1, high-temperature gas and high-temperature substances generated inside the battery 1 may be sprayed from the mounting hole 111, and when the explosion-proof valve 14 is provided, the explosion-proof valve 14 is opened to allow the high-temperature gas or high-temperature substances generated inside the battery 1 to be sprayed.

As shown in fig. 1 and 2, the top cover 11 is further provided with a liquid filling hole 17, and after the battery 1 is packaged, the electrolyte can be filled into the battery 1 through the liquid filling hole 17 of the top cover 11. In actual conditions, when the battery 1 is filled with electrolyte, the electrolyte can easily flow into the mounting hole 111 along the upper surface of the top cover 11, which affects the performance of the battery 1. Fig. 3 is an enlarged view of a portion a in fig. 2, and therefore, as shown in fig. 2 and 3, the battery 1 is provided with a boss 18 surrounding the outer periphery of the mounting hole 111, and the electrolyte can be blocked from entering the mounting hole 111 by the boss 18. It should be noted that, in the present embodiment, the boss 18 is a circular ring structure, but in some embodiments, the boss 18 may be other structures, for example, a notch is formed on the upper surface of the boss 18, or the boss 18 is a non-closed circular arc structure, and the specific shape of the boss 18 may be adjusted according to actual needs, as long as the invention does not depart from the scope of the present invention.

Meanwhile, as shown in fig. 1 and 2, the top cover 11 has a positive post 15 and a negative post 16, and the positive post 15 and the negative post 16 are electrically connected to the battery cell inside the case 12. In this embodiment, the mounting hole 111 is provided at the central position of the top cover 11 in the longitudinal direction, and the positive pole post 15 and the negative pole post 16 are symmetrically provided at both sides of the mounting hole 111 and respectively close to both ends of the top cover 11 in the longitudinal direction. The mounting hole 111 is formed in an elongated shape having circular arcs at both ends, but this is merely an example, and a person skilled in the art can arbitrarily adjust the relative arrangement relationship, shape, and size between the mounting hole 111 and the positive and negative posts 15 and 16 according to actual needs.

As shown in fig. 4, which shows an assembly view of a battery assembly, and fig. 5, which shows an exploded view of a battery assembly, the battery assembly includes a plurality of batteries 1 and a high temperature-resistant sheet 3, the batteries 1 are stacked in a direction perpendicular to the height direction of the batteries 1 to form an assembly of the batteries 1, and the high temperature-resistant sheet 3 is disposed on the top of the assembly of the batteries 1, that is, above the top cap 11 of each battery 1, and covers the mounting hole 111 of each battery 1.

It should be noted that the words "top", "bottom", etc. referred to in this application are to be understood as words of convenience and not as words of limitation.

The high temperature resistant sheet 3 may be fixed to the battery 1 assembly by heat staking, gluing, or by screws or the like. The high temperature resistant sheet 3 may be a mica sheet, a ceramic sheet, a glass sheet, or the like. Preferably, the thickness of the high temperature-resistant sheet 3 is 0.2mm to 1mm to be optimal. When one of the batteries 1 is out of thermal runaway, high-temperature substances generated inside the battery 1 are splashed, but the battery 1 assembly is also provided with the high-temperature resistant sheet 3 to cover the top cover 11 of the cylindrical battery 1, so that the high-temperature substances are prevented from directly contacting the top cover 11, and the structure of the top cover 11 cannot be damaged. And the high-temperature resistant sheet 3 also covers the mounting hole 111, so that high-temperature substances can be prevented from entering the battery 1 from the mounting hole 111, and the probability of thermal runaway diffusion is reduced.

Specifically, as shown in fig. 4 to 6, the high temperature-resistant sheet 3 has projections 31 projecting outward away from the top of the battery 1, and the respective bosses 18 are located in the projections 31. Since the high-temperature resistant sheet 3 is further provided with the convex portion 31, and the boss 18 on the top cover 11 of the battery 1 is positioned in the convex portion 31, the position interference between the boss 18 and the high-temperature resistant sheet 3 can be avoided. In addition, since the material of the high-temperature-resistant sheet 3 is generally brittle, the boss 18 easily damages the high-temperature-resistant sheet 3 without providing the projecting portion 31, and therefore, the utility of the battery module can be effectively improved by providing the projecting portion 31 in the present application.

In this embodiment, as shown in fig. 6, the protrusion 31 is an integral structure, and each boss 18 is located in the protrusion 31 as an integral structure, but in some embodiments, as shown in fig. 7, the protrusion 31 may not be an integral structure, but may include a plurality of protrusions 311 spaced apart from each other, and each protrusion 311 protrudes outward away from the top of the battery 1, and at least one boss 18 is correspondingly located in each protrusion 311.

Preferably, the protrusion 31 also penetrates the high temperature resistant sheet 3 along the width direction of the battery 1, however, in some embodiments, as shown in fig. 8, the protrusion 31 may not penetrate the high temperature resistant sheet 3, but as shown in fig. 8, the protrusion 31 is only a concave rectangular structure. Of course, the specific shape of the protruding portion 31 may be adjusted as needed, and for example, may be circular or polygonal instead of rectangular, and so on.

Specifically, as shown in fig. 6, the high-temperature-resistant sheet 3 includes: a main body portion 32, a pair of first extensions 33, and a pair of second extensions 34, the main body portion 32 covering the mounting holes 111 of the respective batteries 1 and the respective bosses 18. The pair of first extending portions 33 are oppositely disposed at both sides of the main body portion 32, and extend from the main body portion 32 toward the bottom of the battery 1. A pair of second extending sections 34, the pair of second extending sections 34 corresponds to the pair of first extending sections 33 one by one, the second extending sections 34 extend from the corresponding first extending sections 33 along the upper surface of the battery 1 to the direction far away from the boss 18, and the pair of second extending sections 34 are attached to the upper surface of the battery 1. The pair of second extension sections 34 are fixed to the battery 1 assembly by heat staking, gluing, or using screws or the like.

In the present embodiment, as shown in fig. 5 and 6, a pair of first extending sections 33 are provided on both sides of the main body section 32 in the longitudinal direction of the battery 1. Of course, in some embodiments, the pair of first extending sections 33 may be disposed on two opposite sides of the main body portion 32 along the width direction of the battery 1. Because the pair of extending sections are oppositely arranged along the length direction of the battery 1, the contact surface between the pair of second extending sections 34 and the upper surface of the battery 1 is larger, and the second extending sections 34 and the upper surface of the battery 1 can be attached more tightly.

In addition, the refractory plate 3 is spaced apart from the boss 18 by a predetermined distance, i.e., the lower surface of the projection 31 facing the boss 18 is spaced apart from the upper surface of the boss 18 by a predetermined distance. Preferably, this predetermined distance is 0.09mm to 0.3mm. Because the high temperature resistant sheet 3 is separated from the boss 18 by a preset distance, an air layer exists between the high temperature resistant sheet 3 and the boss 18 or the upper surface of the top plate, the air layer plays a role in heat insulation, and overheating of the high temperature resistant sheet 3 can be avoided.

As shown in fig. 4 to 8, the high-temperature-resistant sheet 3 has a weak portion 35 in order to facilitate the high-temperature gas or high-temperature substance in the battery 1 to break through the high-temperature-resistant sheet 3, and the weak portion 35 is provided above the mounting hole 111. In the present embodiment, the weak portions 35 correspond to the mounting holes 111 of the battery 1 assembly one by one, and the weak portions 35 are disposed above the corresponding mounting holes 111. Of course, in some embodiments, more than two weak portions 35 may be disposed above the same mounting hole 111, or one weak portion 35 may correspond to more than two weak portions 35 of the battery 1, and the disposition manner may be adjusted as needed.

In the present embodiment, the weak portion 35 includes 2 line-type structures, in which at least two line-type structures intersect or an extended line intersects. The line shape may be not only a straight line but also a curved line, and the shape of the weak portion 35 may be not only the above-listed shape but also other shapes as long as it does not depart from the scope of the present invention. It is understood that in other embodiments, the weakened portion 35 may be 1 linear structure, or 3 linear structures with different numbers, and when there are multiple linear structures, the linear structures may intersect or be parallel. The weak part 35 is a line type structure formed by an arrangement of several holes, which is shown in fig. 4 to 8, but not limited thereto. The weakened portion 35 may be a crack. Or in other embodiments, the weakpoint 35 may be a scratch. The center of the two linear intersecting structures is located at the center of the mounting hole 111. Of course, it should be noted that in some embodiments, the center of the intersection of the lines may not be at the center of the mounting hole 111.

Because the weak part 35 of the high temperature resistant sheet 3 is positioned above the mounting hole 111, the weak part can be broken under the condition that high temperature and high pressure are generated in the battery 1, a channel for discharging the high temperature and high pressure in the battery 1 outwards is formed, and the explosion and fire of the battery 1 are prevented. That is to say, through the utility model discloses a high temperature piece can be when guaranteeing the normal performance of the pressure release function originally of explosion-proof valve 14 and mounting hole 111 of a battery 1 self, prevents that it from receiving the thermal runaway influence of other batteries 1 and the chain reaction that leads to. The safety and stability of the battery 1 as a whole are improved.

The utility model discloses the second embodiment provides a battery module, and this battery module includes module casing 12 and the battery pack in the above-mentioned arbitrary embodiment, and above-mentioned battery pack sets up in module casing 12. Specifically, the module housing 12 may be a closed square or other shaped module housing 12, or may be an open module housing 12, and in some embodiments, the module housing 12 may be a frame only, and the battery assembly is located in the frame. In short, the specific structure of the module housing 12 can be adjusted according to practical situations, and is not limited in particular.

The utility model discloses the third embodiment still provides a consumer, and this consumer can include the battery module in the second embodiment, and this consumer of course also can include the battery pack of any one in above-mentioned second embodiment only.

Specifically, the electric equipment can be an electric automobile or an electric motorcycle and the like, when the electric equipment comprises a battery assembly, an area for placing the battery assembly can be specially arranged on the electric equipment, the battery assembly is integrated to the area, and at the moment, the battery assembly does not need to be additionally provided with an additional module shell 12.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims (11)

1. A battery assembly, comprising:

the battery pack comprises a plurality of batteries, a plurality of connecting rods and a plurality of connecting rods, wherein the batteries are stacked along the height direction perpendicular to the batteries to form a battery pack, a top cover of each battery is provided with a mounting hole, and a boss surrounding the periphery of the mounting hole is arranged on each battery; and

gao Wenpian, the high temperature resistant sheet is arranged on the top of the battery pack and covers the mounting hole;

the high-temperature resistant sheet is provided with a convex part protruding outwards in the direction far away from the top of the battery, and each boss is positioned in the convex part.

2. The battery pack of claim 1 wherein said projection includes a plurality of spaced projections, each of said projections projecting outwardly away from said top of said battery, at least one of said projections being disposed within each of said projections;

or, the convex part is a whole, and each boss is positioned in the convex part as a whole.

3. The battery module according to claim 1, wherein the protrusion penetrates the high temperature-resistant sheet in a width direction of the battery.

4. The battery module according to claim 1, wherein the high-temperature-resistant sheet comprises:

a main body portion covering the mounting hole of each battery and each boss;

the pair of first extension sections are oppositely arranged at two sides of the main body part, and the first extension parts extend from the main body part to the bottom of the battery; and

the pair of second extension sections correspond to the pair of first extension sections one to one, extend along the direction away from the boss from the upper surface of the battery from the corresponding first extension sections respectively, and are attached to the upper surface of the battery.

5. The battery pack of claim 4, wherein the pair of first extending sections are oppositely disposed on two sides of the main body along the length direction of the battery.

6. The battery pack of claim 1, wherein the high temperature resistant sheet has a plurality of weak portions, each weak portion corresponding to each mounting hole, and each weak portion is disposed above the corresponding mounting hole.

7. The battery module according to claim 6, wherein the weak portion is a crack, a scratch, or a plurality of holes;

or, the weakened portion comprises at least 2 line-shaped structures, wherein at least two line-shaped structures intersect or extend at an intersection.

8. The battery pack according to claim 1, wherein the thickness of the high temperature-resistant sheet above each of the mounting holes is 0.2mm to 1mm;

or the part of the high-temperature resistant sheet above each mounting hole is separated from the boss by a preset distance.

9. The battery pack according to claim 1, wherein a predetermined distance between a lower surface of the high temperature-resistant sheet at a portion above each of the mounting holes and an upper surface of the boss is 0.09mm to 0.3mm;

and/or the high-temperature resistant sheet is hot riveted, glued or fixed on the battery pack by adopting a screw.

10. The utility model provides a battery module which characterized in that, battery module includes:

a module housing;

the battery module according to any one of claims 1 to 9, which is disposed in the module case.

11. An electric device, characterized in that the electric device comprises the battery module according to claim 10;

or, the consumer comprises a battery assembly according to any one of the preceding claims 1 to 9.

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