Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment, and relates to the technical field of batteries. The battery comprises a shell, a battery monomer and a blasting device, the blasting device is arranged in the accommodating cavity and is propped against the battery monomers; the blasting device at least comprises a blasting structure, the blasting structure comprises a blasting body and filler, the interior of the blasting body is hollow, and the filler is arranged in the blasting body; and the blasting structure can be fractured and release the filler when bearing pressure exceeding a preset pressure value. When the blasting structure is subjected to pressure exceeding a preset pressure value, the blasting body is broken, the filler is released after the blasting body is broken, the filler is released into the containing cavity from the interior of the blasting body, the blasting body deforms after the filler is lost in the blasting body, and the blasting body cannot maintain the state of abutting against the battery single body; the pressure between the blasting body and the single battery can be reduced, the pre-tightening force borne by the single battery in the shell is reduced, and normal use of the single battery is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially battery and electric equipment. BACKGROUND

[0002] At present, the battery monomer used by new energy automobile is usually assembled through the mode of stacking and welding into a module, the battery monomers are arranged in series in the same module structure, under the action of pre-tightening force, the module is fixed by end plate and side plate welding, and then assembled into a battery pack form for loading use.

[0003] In the long-term use process of the battery, due to the electrochemical reaction inside the battery monomer, gas is generated inside the battery monomer, so that the battery monomer continuously expands and appears the phenomenon of bulging, the outer end surface of the expanded battery monomer protrudes outward to form a curved surface, so that the thickness of the battery monomer increases, the battery monomer and the module end plate are extruded and the pre-tightening force between them continuously increases, which leads to the decline of the chemical performance of the battery monomer, the cycle life of the battery monomer is limited, and the normal use of the battery monomer is affected. SUMMARY

[0004] The utility model provides a kind of battery and electric equipment, to solve the technical problem that battery monomer and module end plate are extruded and the pre-tightening force between them continuously increases, which leads to the decline of the chemical performance of the battery monomer.

[0005] To achieve the above object, the utility model provides the following technical scheme: a battery comprising: a housing provided with a receiving cavity; a battery monomer disposed in the receiving cavity; a blasting device disposed in the receiving cavity and in abutment with the battery monomer; the blasting device comprises at least one blasting structure, the blasting structure comprises a blasting body and a filler, the blasting body is hollow inside, and the filler is disposed in the blasting body; the blasting structure can rupture and release the filler when subjected to a pressure exceeding a predetermined pressure value.

[0006] Optionally, the filler is a powdery material and has a heat dissipation effect.

[0007] Optionally, the housing comprises a side plate and an end plate connected to each other; at least one of the blasting structures is disposed between the side plate and the battery monomer, and / or at least one of the blasting structures is disposed between the end plate and the battery monomer.

[0008] Optionally, the battery monomer and the side plate are spaced apart, the distance between the battery monomer and at least one of the side plates is n, and 0.5mm≤n≤1.5mm; and / or the battery monomer and the end plate are spaced apart, the distance between the battery monomer and at least one of the end plates is n, and 0.5mm≤n≤1.5mm.

[0009] Optionally, a plurality of the bursting structures are provided and arranged in sequence in a direction away from the battery cell, and adjacent bursting structures abut against each other.

[0010] Optionally, the preset pressure value of the blasting structure is greater than 3300N.

[0011] Optionally, a first air-avoiding groove is provided on an end surface of the blasting body close to the battery cell, and / or a second air-avoiding groove is provided on an end surface of the blasting body away from the battery cell.

[0012] Optionally, the thickness of the two ends of the blasting body is X1, 3mm≤X1≤4mm, and / or the thickness of the middle part of the blasting body is X2, 2mm≤X2≤2.5mm.

[0013] Optionally, a plurality of battery cells are provided, and the plurality of battery cells are arranged in sequence in a direction away from the blasting device.

[0014] In addition, an electrical device is provided, comprising the battery.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the battery cell is arranged in the accommodating cavity, and when the battery cell expands, the end surface of the expanded battery cell bulges outward to form a curved surface, so that the battery cell can abut against the blasting device; when the blasting structure is subjected to a pressure exceeding a preset pressure value, the blasting body will rupture, and the blasting body will release the filler after rupturing, so that the filler will be released from the inside of the blasting body into the accommodating cavity; after the filler is lost inside the blasting body and deformed, the blasting body cannot maintain the state of abutting against the battery cell, so as to reduce the pressure between the blasting body and the battery cell, reduce the pre-tightening force on the battery cell in the shell, and ensure that the battery cell can be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A cross-sectional view of a battery provided in an embodiment of the present utility model.

[0018] Reference numerals:

[0019] Housing 100 ; side plate 110 ; end plate 120 ; battery cell 200 ; blasting device 300 ; blasting structure 310 ; blasting body 320 ; first air-avoiding groove 321 ; second air-avoiding groove 322 . DETAILED DESCRIPTION

[0020] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0021] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0022] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0023] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0024] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0025] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0026] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0027] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0028] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] Reference below Figure 1 A battery and an electrical device according to an embodiment of the present invention are described.

[0030] According to the battery of the embodiment of the first aspect of the present invention, the battery includes a shell 100, a battery cell 200 and a blasting device 300; the shell 100 is provided with a accommodating cavity; the battery cell 200 is arranged in the accommodating cavity; the blasting device 300 is arranged in the accommodating cavity and abuts against the battery cell 200; the blasting device 300 includes at least one blasting structure 310, the blasting structure 310 includes a blasting body 320 and a filler, the blasting body 320 is hollow inside, and the filler is arranged in the blasting body 320; the blasting structure 310 can rupture and release the filler when subjected to a pressure exceeding a preset pressure value.

[0031] The battery cell 200 is disposed within the accommodating cavity. When the battery cell 200 expands, the end surface of the expanded battery cell 200 bulges outward to form a curved surface, allowing the battery cell 200 to abut against the blasting device 300. When the blasting structure 310 is subjected to a pressure exceeding a preset pressure value, the blasting body 320 ruptures. After the blasting body 320 ruptures, the filler is released from the interior of the blasting body 320 into the accommodating cavity. After the filler is lost, the blasting body 320 deforms, making it impossible for the blasting body 320 to maintain abutment with the battery cell 200. This reduces the pressure between the blasting body 320 and the battery cell 200, reduces the preload force on the battery cell 200 within the housing 100, and ensures that the battery cell 200 can be used normally.

[0032] Specifically, the battery of the present invention may include a battery pack and a battery module. The battery module is used as an example here, but it is also applicable to the battery pack.

[0033] Reference Figure 1 , it can be understood that the filler is a powdered material and has a heat dissipation effect.

[0034] After the blasting body 320 ruptures, a rupture hole can be formed on the surface, and the filler can be discharged from the rupture hole to the outside of the blasting body 320. The filler is composed of powdery material. Since the particles of the powdery material are small, the difficulty of discharging the filler from the rupture hole can be reduced, and the efficiency of discharging the filler can be improved.

[0035] After the powdery material is discharged into the accommodating cavity, the powdery material is dispersed in the accommodating cavity so that the powdery material can abut against the battery cell 200 in the accommodating cavity. The powdery material has a heat dissipation effect, which can improve the heat dissipation performance of the battery cell 200 and reduce the damage to the battery cell 200 caused by excessive temperature.

[0036] Specifically, the filler may be composed of powdered silica gel to improve the heat dissipation effect of the filler.

[0037] Reference Figure 1 It can be understood that the housing 100 includes a side plate 110 and an end plate 120 that are connected to each other; at least one explosion structure 310 is arranged between the side plate 110 and the battery cell 200, and / or, at least one explosion structure 310 is arranged between the end plate 120 and the battery cell 200.

[0038] The blasting structure 310 can be arranged between the side plate 110 and the battery cell 200, and the battery cell 200 is arranged in the accommodating cavity. When the battery cell 200 expands, the end surface of the expanded battery cell 200 bulges outward to form a curved surface, so that the battery cell 200 can abut against the blasting device 300, so that the blasting device 300 abuts against the end surfaces of the side plate 110 and the battery cell 200 respectively. The expanded battery cell 200 will squeeze the blasting device 300 in the accommodating cavity. When the blasting structure 310 is subjected to a pressure exceeding a preset pressure value, the blasting body 320 will rupture and deform, and the filler will be released after the blasting body 320 ruptures.

[0039] The blasting structure 310 can also be arranged between the end plate 120 and the battery cell 200, and the battery cell 200 is arranged in the accommodating cavity. When the battery cell 200 expands, the end surface of the expanded battery cell 200 bulges outward to form a curved surface, so that the battery cell 200 can abut against the blasting device 300, so that the blasting device 300 abuts against the end surface of the end plate 120 and the battery cell 200 respectively. The expanded battery cell 200 will squeeze the blasting device 300 in the accommodating cavity. When the blasting structure 310 is subjected to a pressure exceeding the preset pressure value, the blasting body 320 will rupture and deform, and the filler will be released after the blasting body 320 ruptures.

[0040] Therefore, according to the specific actual situation, one blasting structure 310 can be provided, and the blasting structure 310 can be provided between the side plate 110 and the battery cell 200, or the blasting structure 310 can be provided between the end plate 120 and the battery cell 200, so that the adaptability of the installation of the blasting structure 310 is higher; of course, multiple blasting structures 310 can be provided, and multiple blasting structures 310 can be respectively provided between the side plate 110 and the battery cell 200, and the end plate 120 and the battery cell 200, so that the adaptability of the installation of the blasting structure 310 is higher, and the safety of the battery can be further improved.

[0041] Specifically, the side plate 110 is arranged around the battery cell 200 and the blasting device 300, and two end plates 120 are provided, and the two end plates 120 are respectively arranged at both ends of the battery cell 200 and the blasting device 300 to provide protection; the blasting device 300 is arranged between one of the end plates 120 and the battery cell 200, and the other end plate 120 is arranged on the side of the battery cell 200 away from the blasting device 300. The opposite ends of the battery cell 200 are respectively in contact with the blasting device 300 and the other end plate 120, so that the expanded battery cell 200 can respectively contact one end plate 120 and the blasting body 320 of the blasting structure 310, so as to limit the direction of pressure applied by the battery cell 200 on the blasting body 320.

[0042] The battery cell 200 and the side plate 110 are spaced apart so that the filler released after the rupture of the explosive body 320 can enter between the battery cell 200 and the side plate 110, thereby preventing the filler from remaining between the explosive body 320 and the battery cell 200 and affecting the continued expansion of the battery cell 200. The filler is a powdered material. After the powdered material enters between the battery cell 200 and the side plate 110, the powdered material can contact the battery cell 200 and the side plate 110, thereby ensuring the heat dissipation effect of the filler on the battery cell 200.

[0043] Specifically, the blasting device 300 is also spaced apart from the side plate 110 , so that the filler released after the blasting body 320 ruptures can smoothly enter between the battery cell 200 and the side plate 110 from between the blasting device 300 and the side plate 110 .

[0044] Reference Figure 1 It can be understood that the battery cell 200 is spaced apart from the side plate 110, and the distance between the battery cell 200 and at least one side plate 110 is n, 0.5mm≤n≤1.5mm; and / or, the battery cell 200 is spaced apart from the end plate 120, and the distance between the battery cell 200 and at least one end plate 120 is n, 0.5mm≤n≤1.5mm.

[0045] The filler can enter between the battery cell 200 and the side plate 110, so that the filler abuts against the side plate 110 and the battery cell 200, ensuring the cooling effect and avoiding the filler from gathering between the battery cell 200 and the explosive body 320, thereby avoiding increasing the magnitude of the preload force on the battery cell 200; specifically, the filler is composed of a powdery material, and the diameter of the powdery material is less than or equal to the size of the gap between the battery cell 200 and the side plate 110.

[0046] When the explosive structure 310 is arranged between the battery cell 200 and the side plate 110, the distance between the battery cell 200 and the side plate 110 is greater than 0.5 mm so that the filler can enter between the battery cell 200 and the side plate 110, and the distance between the battery cell 200 and the side plate 110 is less than 1.5 mm so as to reduce the amplitude of the shaking of the battery cell 200, thereby reducing the degree of collision between the battery cell 200 and the side wall of the accommodating cavity and the explosive structure 310.

[0047] When the explosive structure 310 is arranged between the battery cell 200 and the end plate 120, the distance between the battery cell 200 and the end plate 120 is greater than 0.5 mm, so that the filler can enter between the battery cell 200 and the end plate 120, and the distance between the battery cell 200 and the end plate 120 is less than 1.5 mm, so as to reduce the amplitude of the shaking of the battery cell 200, thereby reducing the degree of collision between the battery cell 200 and the side wall of the accommodating cavity and the explosive structure 310.

[0048] Reference Figure 1 It can be understood that there are multiple bursting structures 310 and they are arranged in sequence in a direction away from the battery cell 200, and adjacent bursting structures 310 abut against each other.

[0049] The battery cell 200 abuts against the blasting structure 310 closest to the battery cell 200 among the multiple blasting structures 310. As the battery cell 200 expands and internal gas production increases, the surface of the battery cell 200 opposite to the blasting device 300 abuts against the blasting structure 310. After the blasting body 320 of the blasting structure 310 abutting against the battery cell 200 explodes, as the preload force on the battery cell 200 increases, the multiple blasting structures 310 of the blasting device 300 explode sequentially in a direction away from the battery cell 200 to release stress. Specifically, after the blasting body 320 of the previous blasting structure 310 explodes, the battery cell 200 can abut against the next blasting structure 310 to maintain the stability of the battery structure.

[0050] Specifically, a stress sensor may be provided between the battery cell 200 and the blasting device 300. The stress sensor is connected to the blasting device 300 by signal. The stress sensor is capable of detecting the pressure between the battery cell 200 and the blasting body 320 opposite to the battery cell 200, and is capable of transmitting the detected pressure value to the blasting body 320. When the pressure between the battery cell 200 and the preceding blasting structure 310 opposite to the battery cell 200 is greater than a preset pressure value, the blasting body 320 explodes, and the blasting body 320 continues to be opposite to the succeeding blasting structure 310, and the stress sensor continues to detect the pressure between the battery cell 200 and the succeeding blasting structure 310.

[0051] Reference Figure 1 It can be understood that the preset pressure value of the blasting structure 310 is greater than 3300N.

[0052] Multiple battery cells 200 are stacked in groups. Under the action of a preload of 3000±200N, the multi-layer blasting device 300 is set between the outermost battery cells 200 and the end plate 120. The starting preload force of the blasting structure 310 is greater than 3300N, which effectively prevents the blasting device 300 from failing due to excessive preload when the battery cells 200 are stacked in groups, thereby improving the working stability of the blasting device 300. Among them, the battery cells 200 can withstand a long-term preload range of 3000±200N, and the overall cycle performance of the battery cells 200 is better than that of cycles greater than 3000N.

[0053] Reference Figure 1 It is understandable that a first air-avoiding groove 321 is provided on the end surface of the explosive body 320 close to the battery cell 200 , and / or a second air-avoiding groove 322 is provided on the end surface of the explosive body 320 away from the battery cell 200 .

[0054] The first air-avoidance groove 321 is arranged opposite to the battery cell 200. After the battery cell 200 expands, the end surface of the battery cell 200 opposite to the explosive body 320 bulges. By providing the first air-avoidance groove 321, the bulged end surface of the battery cell 200 can be accommodated, thereby increasing the contact area between the battery cell 200 and the explosive body 320 and reducing the pressure applied to the battery cell 200.

[0055] Specifically, multiple blasting structures 310 are provided. After the blasting body 320 ruptures, the filling material enters the accommodating cavity from the inside of the blasting body 320. Since the multiple blasting structures 310 are arranged in sequence along the same direction, the filling material after the blasting body 320 of the previous blasting structure 310 ruptures can enter the first avoidance groove 321 of the blasting body 320 of the next blasting structure 310.

[0056] The end surface of the battery cell 200 opposite to the blasting structure 310 is bulged, and the battery cell 200 abuts against the blasting structure 310, so that the battery cell 200 can press the blasting body 320 in the direction close to the blasting body 230 to deform the blasting body 320. By providing the second air-avoidance groove 322, the area where the previous blasting body 320 abuts against the blasting body 320 of the subsequent blasting structure 310 can be avoided, thereby preventing the battery cell 200 from expanding and triggering the two blasting structures 310 at the same time, thereby improving the stability of the blasting device 300.

[0057] Reference Figure 1 It can be understood that the thickness of the two ends of the blasting body 320 is X1, 3mm≤X1≤4mm, and the thickness of the middle part of the blasting body 320 is X2, 2mm≤X2≤2.5mm.

[0058] Specifically, since the first and second air-avoiding grooves 321 and 322 are respectively provided on the opposite end surfaces of the blasting body 320 , the blasting body 320 has a structural design of being thick at both ends and thin in the middle.

[0059] There are multiple explosive bodies 320, which are stacked along a first direction. The two ends of the explosive bodies 320 are thicker along the first direction, and the middle part of the explosive body 320 is thinner along the first square. The explosive bodies 320 are symmetrically arranged relative to the first direction and the second direction, wherein the first direction and the second direction are perpendicular to each other.

[0060] Reference Figure 1 It can be understood that there are multiple battery cells 200, and the multiple battery cells 200 are arranged in sequence in a direction away from the blasting device 300. The battery cells 200 located at the head end and the tail end of the multiple battery cells 200 are respectively in contact with the blasting device 300 and one of the end plates 120.

[0061] The battery cells 200 are neatly arranged in series in the same module structure. Under the action of preload, the module as a whole is welded and fixed by the end plate 120 and the side plate 110. During the long-term use of the battery, due to the electrochemical reaction inside the battery cell 200, gas will be generated inside the battery cell 200, causing the battery cell 200 to continuously expand and bulge. The outer end surface of the expanded battery cell 200 bulges outward to form a curved surface, which increases the thickness of the battery cell 200. The preload between multiple battery cells 200 continues to increase, resulting in a decrease in the chemical performance of the battery cell 200. The cycle life of the battery cell 200 is limited, affecting the normal use of the battery cell 200; multiple battery cells 200 are arranged in the accommodating cavity. When the battery cell 200 expands, the multiple battery cells 200 close to the explosion After the battery cells 200 in the device 300 expand, the end surfaces of the expanded battery cells 200 bulge outward into curved surfaces and are able to abut the blasting device 300. Since the blasting device 300 abuts the inner wall of the accommodating cavity and the end surfaces of the battery cells 200, the expanded battery cells 200 squeeze the blasting device 300 within the accommodating cavity. When the blasting structure 310 is subjected to pressure exceeding a preset pressure value, the blasting body 320 of the blasting structure 310 ruptures and deforms. Upon rupturing, the blasting body 320 releases the filler from the interior of the blasting body 320 into the accommodating cavity. After the filler is lost, the blasting body 320 deforms, making it impossible for the blasting structure 310 to maintain its abutment with the battery cells 200. This reduces the preload force between the multiple battery cells 200 and ensures normal use of the battery cells 200.

[0062] The electric device of the second embodiment of the present invention includes the battery of the first embodiment. Specifically, the electric device can be a new energy vehicle.

[0063] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A battery, characterized in that include: The housing (100) is provided with a receiving cavity; A battery cell (200) is disposed in the accommodating cavity; A blasting device (300) is disposed in the accommodating cavity and abuts against the battery cell (200); the blasting device (300) comprises at least one blasting structure (310), the blasting structure (310) comprising a blasting body (320) and a filler; the blasting body (320) is hollow inside, and the filler is disposed in the blasting body (320); the blasting structure (310) is capable of rupturing and releasing the filler when subjected to a pressure exceeding a preset pressure value.

2. The battery according to claim 1, characterized in that The filler is a powdery material and has a heat dissipation effect.

3. The battery according to claim 1 or 2, characterized in that The housing (100) comprises a side plate (110) and an end plate (120) connected to each other; at least one of the explosion structures (310) is arranged between the side plate (110) and the battery cell (200), and / or at least one of the explosion structures (310) is arranged between the end plate (120) and the battery cell (200).

4. The battery according to claim 3, characterized in that The battery cell (200) and the side plate (110) are spaced apart, and the distance between the battery cell (200) and at least one side plate (110) is n, 0.5 mm ≤ n ≤ 1.5 mm; and / or, The battery cell (200) and the end plate (120) are spaced apart, and the distance between the battery cell (200) and at least one end plate (120) is n, and 0.5 mm ≤ n ≤ 1.5 mm.

5. The battery according to claim 1, characterized in that A plurality of the bursting structures (310) are provided and are arranged in sequence in a direction away from the battery cell (200), and adjacent bursting structures (310) abut against each other.

6. The battery according to claim 1 or 5, characterized in that The preset pressure value of the blasting structure (310) is greater than 3300N.

7. The battery according to claim 1, characterized in that A first air-avoiding groove (321) is provided on the end surface of the blasting body (320) close to the battery cell (200), and / or a second air-avoiding groove (322) is provided on the end surface of the blasting body (320) away from the battery cell (200).

8. The battery according to claim 7, characterized in that The thickness of the two ends of the blasting body (320) is X1, 3mm≤X1≤4mm, and / or the thickness of the middle part of the blasting body (320) is X2, 2mm≤X2≤2.5mm.

9. The battery according to claim 1, characterized in that A plurality of battery cells (200) are provided, and the plurality of battery cells (200) are arranged in sequence in a direction away from the blasting device (300).

10. Electrical equipment, characterized in that: include: The battery according to any one of claims 1 to 9.

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