CN219123376U - Battery and electricity utilization device - Google Patents

Abstract

The application provides a battery and an electric device. The battery box body, the battery monomer, the fuse, the first cover body and the second cover body; the box body is provided with a first wall and a containing cavity, the first wall is provided with a through hole, and the through hole is communicated with the containing cavity and the outside of the box body; the battery monomer is accommodated in the accommodating cavity; the fuse is connected to the first wall and accommodated in the accommodating cavity, the fuse is electrically connected with the battery cell, and the fuse is configured to enter the accommodating cavity through the through hole; the first cover body is connected with the first wall in a sealing way and covers the through hole; the second cover body is connected with the first wall in a sealing way, and the second cover body is sleeved on the first cover body. The battery provided by the application can omit the process flow of sealing test on the box body in the process of replacing the fuse, is beneficial to simplifying the process flow of replacing the fuse and improving the efficiency of replacing the fuse when improving the sealing performance of the box body.

Description

Battery and electricity utilization device

Technical Field

The application belongs to the technical field of batteries, and particularly relates to a battery and an electric device.

Background

Batteries are widely used in electronic devices such as cellular phones, notebook computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy vehicles, electric toy ships, electric toy airplanes, electric tools, and the like. The battery may include a cadmium nickel battery, a hydrogen nickel battery, a lithium ion battery, a secondary alkaline zinc manganese battery, and the like.

In addition to improving the service performance of the battery, the maintenance convenience is a non-negligible problem in the development of the battery technology, and therefore, how to improve the maintenance convenience of the battery is a technical problem that is continuously improved in the battery technology.

Disclosure of Invention

The embodiment of the application provides a battery and an electricity utilization device, which can improve the convenience of battery maintenance.

In one aspect, the present application provides a battery, including a case, a battery cell, a fuse, a first cover, and a second cover; the box body is provided with a first wall and a containing cavity, the first wall is provided with a through hole, and the through hole is communicated with the containing cavity and the outside of the box body; the battery monomer is accommodated in the accommodating cavity; the fuse is connected to the first wall and accommodated in the accommodating cavity, the fuse is electrically connected with the battery cell, and the fuse is configured to enter the accommodating cavity through the through hole; the first cover body is connected with the first wall in a sealing way and covers the through hole; the second cover body is connected with the first wall in a sealing way, and the second cover body is sleeved on the first cover body.

In some embodiments, the first wall includes a frame beam having a mounting hole and a mounting seat provided in the mounting hole and sealingly connected to the frame beam; the mount pad has the via hole, and the fuse is connected in the mount pad, and first lid and mount pad sealing connection, second lid and frame roof beam sealing connection.

In some embodiments, the battery further comprises a first seal; one of the mounting seat and the first cover body is provided with an annular clamping groove, the other one is provided with an annular clamping block, the annular clamping block is clamped in the annular clamping groove, and the first sealing piece is abutted between the annular clamping groove and the annular clamping block.

In some embodiments, the frame beam includes a beam body and a support member connected to at least one side of the beam body in an axial direction perpendicular to the mounting hole, the mounting hole is disposed through the support member and the beam body, the mount pad is connected to the beam body and the support member, and the second cover is connected to the beam body and the support member.

In some embodiments, the battery further comprises a third seal, the mounting seat is fixedly connected with the frame beam, and the third seal is arranged around the periphery of the mounting hole and is abutted between the frame beam and the mounting seat.

In some embodiments, the battery further comprises a second seal, the second cover being in secure connection with the first wall, the second seal abutting between the first wall and the second cover.

In some embodiments, the second cover has a protrusion protruding toward the first cover, and the protrusion abuts against the first cover to limit displacement of the first cover in a direction away from the first wall.

In some embodiments, the battery further comprises an adapter and a conductive member, the adapter comprises a first subsection and a second subsection which are bent with each other, the first subsection is electrically connected with the fuse, the second subsection is electrically connected with one end of the conductive member, and the other end of the conductive member is electrically connected with the battery cell.

In some embodiments, the battery further includes a signal terminal electrically connecting the fuse and the battery management system of the battery and for transmitting the electrical signal.

On the other hand, the embodiment of the application provides an electricity utilization device, which comprises the battery provided by any one of the embodiments, wherein the battery is used for providing electric energy.

The battery and the power consumption device that provide of this embodiment through setting up first lid and second lid respectively with first wall sealing connection, and the two all covers the via hole setting, is favorable to improving the sealing performance to the via hole of box, at the in-process of changing the fuse, after first lid and second lid are sealed with first wall respectively, can omit the technological process that seals the test to the box, when improving the leakproofness of box, be favorable to simplifying the technological process that the fuse was changed, improve the efficiency that the fuse was changed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly explain the drawings needed in the embodiments of the present application, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a vehicle structure provided in an embodiment of the present application;

fig. 2 is a schematic structural view of a battery according to an embodiment of the present application after omitting a part of the structure;

fig. 3 is a schematic structural view of a battery module in a battery according to an embodiment of the present disclosure;

fig. 4 is a schematic structural view of another battery provided in an embodiment of the present application;

fig. 5 is an exploded view of a part of the structure of a battery according to an embodiment of the present application at a view angle;

fig. 6 is an exploded view of a part of the structure of a battery according to another view angle provided in an embodiment of the present application;

fig. 7 is a schematic cross-sectional structure view of a part of the structure of a battery provided in an embodiment of the present application;

fig. 8 is a schematic structural view of a part of the structure in a battery provided in an embodiment of the present application.

In the drawings, the drawings are not necessarily to scale.

Reference numerals in the specific embodiments are as follows:

1. a vehicle; 1a, a motor; 1b, a controller;

10. a battery; 11. a case; 11a, a receiving cavity; 111. a first box portion; 112. a second box portion; 113. a first wall; 113a, vias; 1131. a frame beam; 1131a, mounting holes; 11311. a beam body; 11312. a support; 1132. a mounting base; 1132a, annular clamp blocks;

20. a battery module;

30. a battery cell;

40. a fuse;

51. a first cover; 51a, annular clamping grooves; 52. a second cover; 52a, a convex part; 53. a first seal; 54. a second seal; 55. a third seal; 56. an adapter; 57. a conductive member; 58. and a signal terminal.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below, and in order to make the objectives, technical solutions, and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and detailed embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative of the application and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the patent.

It should also be noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The fuse is used as an important part in the battery, is usually connected in series in a high-voltage loop in the battery, and when the battery has a safety risk, the fuse is fused to break the circuit in the battery, prevent the further spreading or development of the safety risk and play a role in protecting the battery. Once the fuse is triggered to be fused, the fuse cannot be recovered, and the battery can work normally after the fuse needs to be replaced. The fuse is installed in the box of battery, after the fuse is changed, need seal the box to reduce outside water, oxygen etc. and get into the inside of box and cause the risk of damaging the inside spare part of battery.

In the related art, after the replacement of the fuse is completed, the sealing performance of the box body of the battery needs to be tested, so that the sealing performance of the box body is ensured. However, in order to ensure the safety performance of the battery during the working process, the probability of triggering the fuse is high when the fuse works, so that the fuse is replaced more frequently, and after the fuse is replaced each time, the sealing performance test is required to be performed on the box body, so that the sealing performance of the box body is ensured, and the safety performance of the battery is improved. Therefore, the replacement process of the fuse is complex and time-consuming.

In view of this, the embodiments of the present application provide a battery and an electric device using the battery.

The battery provided by embodiments of the present application may be a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

The battery cells may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, or a magnesium ion battery cell, etc., which the embodiments of the present application are not limited to. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft pack battery cell are not limited thereto.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector; the positive current collector comprises a positive current collecting part and a positive protruding part protruding out of the positive current collecting part, the positive current collecting part is coated with a positive active material layer, at least part of the positive protruding part is not coated with the positive active material layer, and the positive protruding part is used as a positive lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, the positive electrode active material layer includes a positive electrode active material, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative current collector comprises a negative current collecting part and a negative convex part protruding out of the negative current collecting part, wherein the negative current collecting part is coated with a negative active material layer, at least part of the negative convex part is not coated with the negative active material layer, and the negative convex part is used as a negative tab. The material of the anode current collector may be copper, the anode active material layer includes an anode active material, and the anode active material may be carbon or silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The separator may be made of PP (polypropylene) or PE (polyethylene) or the like. In addition, the electrode assembly may be a wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.

The electric device provided by the embodiment of the application can be a vehicle, a mobile phone, portable equipment, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric device in particular.

For the purpose of illustrating the technical solutions described herein, the following detailed description is provided with reference to specific drawings and examples.

For convenience of explanation, the following examples will be described taking an electric device as an example of a vehicle.

As shown in fig. 1, a battery 10 is provided inside the vehicle 1, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1, the battery 10 may be used for power supply of the vehicle 1, and for example, the battery 10 may be used as an operation energy source of the vehicle 1.

The vehicle 1 may further include a controller 1b and a motor 1a. The controller 1b is used to control the battery 10 to supply power to the motor 1a, for example, for operating power requirements at start-up, navigation and travel of the vehicle 1.

In some embodiments of the present application, the battery 10 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, providing driving power for the vehicle 1 instead of or in part instead of fuel oil or natural gas.

In the battery 10, the number of battery cells may be one or more. If the number of the battery cells is multiple, the battery cells can be connected in series, in parallel or in series-parallel. The series-parallel connection refers to that a plurality of battery monomers are connected in series or in parallel. The battery cells can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the battery cells is accommodated in the box body. As shown in fig. 2, a plurality of battery cells may be connected in series, in parallel, or in series-parallel to form the battery module 20. The plurality of battery modules 20 are then connected in series or parallel or a series-parallel combination to form a unit and are accommodated in a case.

Illustratively, as shown in fig. 3, fig. 3 is a schematic structural view of the battery module 20 shown in fig. 2. In the battery module 20, the battery cells 30 are plural. The plurality of battery cells 30 are first connected in series or parallel or a series-parallel combination to form the battery module 20. The plurality of battery modules 20 are then connected in series or parallel or a series-parallel combination to form a unit and are accommodated in a case.

Alternatively, electrical connection between the plurality of battery cells 30 in the battery module 20 may be achieved through a bus bar member to achieve parallel connection or series-parallel connection of the plurality of battery cells 30 in the battery module 20.

As shown in fig. 2, 4, 5 and 6, the battery 10 provided according to the embodiment of the present application includes a case 11, a battery cell 30, a fuse 40, a first cover 51 and a second cover 52. The housing 11 has a first wall 113 and a housing chamber 11a, the first wall 113 having a through hole 113a, the through hole 113a communicating the housing chamber 11a and the outside of the housing 11. The battery cell 30 is accommodated in the accommodating chamber 11a, the fuse 40 is connected to the first wall 113 and accommodated in the accommodating chamber 11a, the fuse 40 is electrically connected to the battery cell 30, and the fuse 40 is configured to be able to enter the accommodating chamber 11a via the via hole 113 a. The first cover 51 is hermetically connected to the first wall 113 and is disposed to cover the via hole 113 a. The second cover 52 is connected with the first wall 113 in a sealing way, and the second cover 52 is sleeved on the first cover 51.

The case 11 may include a first case portion 111 and a second case portion 112, and the first case portion 111 and the second case portion 112 are covered with each other to define a receiving chamber 11a for receiving the battery cell 30. The second case portion 112 may be a hollow structure having one end opened, the first case portion 111 may be a plate-like structure, and the first case portion 111 is covered on the opening side of the second case portion 112 to form a case 11 having a receiving chamber 11 a; the first case portion 111 and the second case portion 112 may each have a hollow structure with one side opened, and the opening side of the first case portion 111 is closed to the opening side of the second case portion 112 to form the case 11 having the accommodation chamber 11a. Of course, the first and second case parts 111 and 112 may be various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

Alternatively, the first wall 113 may be at least part of the first housing portion 111, or the first wall 113 may be at least part of the second housing portion 112.

The fuse 40 is installed in the first wall 113, and in the process of changing the fuse 40, the fuse 40 passes through the through hole 113a to enter and exit the accommodating cavity 11a, and the fuse 40 is electrically connected with the battery cell 30, so that a high-voltage loop formed by the fuse 40 and the battery cell 30 is connected in series, when the battery 10 has risks of collision, thermal runaway, short circuit and the like, the fuse 40 is triggered to fuse in time, so that the high-voltage loop inside the battery 10 is broken, and the high-temperature and other safety risks are prevented from spreading or developing inside the battery 10.

The first cover 51 is sealingly connected to the first wall 113, and the two may be sealingly connected by a seal or the like. The first cover 51 is disposed over the via 113a, and then the first cover 51 seals the via 113a inside the first cover 51 to provide a primary seal for the via 113a on the first wall 113.

The second cover 52 is sleeved on the first cover 51 and is connected with the first wall 113 in a sealing manner, so that the second cover 52 provides a second-stage seal for the through hole 113a, and impurities such as external air, water and the like can enter the accommodating cavity 11a only through the sealing position of the second cover 52 and the first wall 113 and the sealing position of the first cover 51 and the first wall 113. The gas in the accommodating cavity 11a needs to pass through the sealing connection between the first cover 51 and the first wall 113 and the sealing connection between the second cover 52 and the first wall 113 to flow out of the accommodating cavity 11a.

Therefore, the first cover 51 and the second cover 52 together form a continuous two-stage seal against the through hole 113a, and after the replacement of the fuse 40 is completed, the first cover 51 and the second cover 52 are respectively engaged with the first wall 113 wall to complete the sealing of the case 11. And because two-stage seal is provided, under the condition that any one of the two-stage seal fails, the other one can still provide good sealing effect, the sealing grade of the box 11 is very high, and after the replacement of the fuse 40 is completed, the box 11 can be free from being subjected to a tightness test, and the operation complexity of the replacement of the fuse 40 is reduced.

In addition, since the fuse 40 and the battery cell 30 are contained in the accommodating cavity 11a together, the temperature rise of the fuse 40 can be diffused into the whole accommodating cavity 11a and transmitted to the outside of the accommodating cavity 11a through the box 11 and other parts, thereby being beneficial to reducing the temperature rise of the fuse 40 and improving the working reliability of the fuse 40.

Therefore, in the battery 10 provided by the embodiment of the application, the first cover 51 and the second cover 52 are respectively in sealing connection with the first wall 113, and both cover the through hole 113a, so that the sealing performance of the through hole 113a of the box 11 is improved, the process flow of sealing test on the box 11 can be omitted after the first cover 51 and the second cover 52 are respectively sealed with the first wall 113 in the process of replacing the fuse 40, the sealing performance of the box 11 is improved, the process flow of replacing the fuse 40 is simplified, and the replacement efficiency of the fuse 40 is improved.

Alternatively, the first wall 113 may be a plate-shaped structure as a whole, or the first wall 113 may include a plate-shaped structure and a beam structure for supporting the plate-shaped structure, and the via 113a may be formed in the plate-shaped structure, or the via 113a may be formed in the beam structure, which is not limited herein, and may be specifically selected according to actual needs.

As shown in fig. 5 and 6, in some embodiments, the first wall 113 includes a frame beam 1131 and a mounting seat 1132, the frame beam 1131 having a mounting hole 1131a, the mounting seat 1132 being disposed in the mounting hole 1131a and coupled to the frame beam 1131; the mounting base 1132 has a via 113a, the fuse 40 is connected to the mounting base 1132, the first cover 51 is connected to the mounting base 1132 in a sealing manner, and the second cover 52 is connected to the frame beam 1131 in a sealing manner.

Providing the first wall 113 includes the frame beam 1131 and the mounting base 1132, and mounting the fuse 40 on the mounting base 1132, the structural style of the mounting base 1132 may be set according to the specific structure of the fuse 40, so as to better bear the fuse 40, and improve the connection strength between the fuse 40 and the first wall 113.

In addition, since the frame beam 1131 has higher structural strength, the mounting seat 1132 is connected with the frame beam 1131, so that the frame beam 1131 has higher supporting strength to the mounting seat 1132, which is beneficial to improving the supporting strength of the first wall 113 to the fuse 40.

The mounting seat 1132 is arranged in the mounting hole 1131a, at least part of the mounting seat 1132 can be arranged to penetrate through the mounting hole 1131a, the mounting seat 1132 is in sealing connection with the frame beam 1131, and the mounting seat 1132 does not need to be detached from the frame beam 1131 in the process of replacing the fuse 40, so that the mounting seat 1132 and the frame beam 1131 can be always in sealing connection. The gas in the accommodating chamber 11a does not enter the space between the first cover 51 and the second cover 52 through the connection of the mounting seat 1132 and the frame beam 1131.

The first cover 51 is connected with the mounting seat 1132 in a sealing manner so as to perform primary sealing on the through hole 113a, and the second cover 52 is connected with the frame beam 1131, so that the second cover 52 is also arranged to cover the through hole 113a and perform secondary sealing on the through hole 113 a.

For example, the second cover 52 may be disposed to cover the mounting hole 1131a, so that the mounting seat 1132 is in sealing connection with the frame beam 1131, and the second cover is in sealing connection with the frame beam 1131 to form a secondary seal with the mounting hole 1131a, and the gas in the accommodating cavity 11a needs to enter the space between the first cover 51 and the second cover 52 through the connection between the mounting seat 1132 and the frame beam 1131 and can be emitted to the outside of the battery 10 through the connection between the second cover 52 and the frame beam 1131. In this way, the sealing performance of the accommodating chamber 11a in the wire body can be further improved.

Therefore, in this embodiment, by providing that the first wall 113 includes the frame beam 1131 and the mounting seat 1132, and providing that the fuse 40 is connected to the mounting seat 1132, on the premise of ensuring the sealing performance of the accommodating cavity 11a, the supporting strength of the first wall 113 to the fuse 40 is improved.

The form of the sealing connection between the first cover 51 and the first wall 113, or between the second cover 52 and the first wall 113, may be any form that can be implemented, and may be selected according to practical requirements.

As shown in fig. 7, in some embodiments, the battery 10 further includes a first seal 53, one of the mounting base 1132 and the first cover 51 has an annular clamping groove 51a, the other has an annular clamping block 1132a, the annular clamping block 1132a is clamped in the annular clamping groove 51a, and the first seal 53 abuts between the annular clamping groove 51a and the annular clamping block 1132 a.

Alternatively, an annular clamping groove 51a may be provided to be formed on the mounting seat 1132, an annular clamping block 1132a may be formed on the first cover 51, or an annular clamping groove 51a may be provided to be formed on the first cover 51, and an annular clamping block 1132a may be formed on the mounting seat 1132.

Alternatively, the annular clamping groove 51a may be in a circular ring shape, an elliptical ring shape or a multi-deformed ring shape, and the shape of the annular clamping block 1132a is adapted to the shape of the annular clamping groove 51a, so that the two can be mutually matched.

For example, the mounting seat 1132 may be provided with an annular clamping block 1132a, and the annular clamping block 1132a is in a shape of a circular plate and is enclosed on the periphery of the through hole 113 a. The first cover 51 has an annular locking groove 51a, and the annular locking groove 51a is annular. During installation, the annular clamping groove 51a of the first cover body 51 is clamped with the annular clamping block 1132a, the first sealing piece 53 is clamped between the inner wall of the annular clamping groove 51a and the annular clamping block 1132a, and the first sealing piece 53 deforms so as to realize sealing connection between the first cover body 51 and the installation seat 1132.

The first seal 53 is abutted between the annular clamping groove 51a and the annular clamping block 1132a, and the first seal 53 seals the through hole 113a along the radial direction of the through hole 113 a.

Therefore, one of the mounting seat 1132 and the first cover 51 is provided with the annular clamping groove 51a, the other one is provided with the annular clamping block 1132a, and sealing connection is realized between the annular clamping groove 51a and the annular clamping block 1132a through the first sealing piece 53, so that the sealing of the through hole 113a is realized, and meanwhile, the connection of the first cover 51 and the mounting seat 1132 is convenient to realize rapidness and reliability.

As shown in fig. 5 and 6, in some embodiments, the frame beam 1131 includes a beam body 11311 and a support 11312, the support 11312 is connected to at least one side of the beam body 11311 along an axial direction perpendicular to the mounting hole 1131a, the mounting hole 1131a is disposed through the support 11312 and the beam body 11311, the mounting seat 1132 is connected to the beam body 11311 and the support 11312, and the second cover 52 is connected to the beam body 11311 and the support 11312.

Alternatively, the support members 11312 may be formed and then coupled to the beam body 11311 by welding, threading, etc.

Generally, the frame beams 1131 have high structural strength and weight, and the frame beams 1131 are sized as small as possible to minimize the weight of the housing 11 while meeting the relevant strength requirements.

Therefore, the frame beam 1131 includes the beam body 11311 and the supporting member 11312, and the supporting member 11312 is connected to at least one side of the beam body 11311 along the axial direction perpendicular to the mounting hole 1131a, which is beneficial to improving the dimension of the frame beam 1131 along the axial direction perpendicular to the mounting hole 1131a and the extending direction of the beam body 11311, so that the frame beam 1131 has enough space to provide the mounting hole 1131a and the mounting seat 1132, and a sufficiently large through hole 113a is provided on the mounting seat 1132, thereby facilitating the replacement of the fuse 40, the fuse 40 can smoothly enter and exit the through hole 113a during the replacement of the fuse 40, and further improving the smoothness of the replacement of the fuse 40. And the installation seat 1132 and the second cover 52 are connected to the beam body 11311 and the supporting member 11312, which is beneficial to improving the connection mildness of the installation seat 1132 and the second cover 52 with the frame beam 1131 respectively.

As shown in fig. 7, in some embodiments, the battery 10 further includes a third seal 55, where the mounting seat 1132 is fastened to the frame beam 1131, and the third seal 55 is disposed around a peripheral side of the mounting hole 1131a and abuts between the frame beam 1131 and the mounting seat 1132.

The mounting seat 1132 and the frame beam 1131 can be connected together through a threaded connection, riveting or pin connection mode, and in the connection process, the second sealing element 54 is arranged on the periphery side of the mounting hole 1131a in a surrounding mode and deforms so as to be abutted between the frame beam 1131 and the mounting seat 1132, so that sealing connection between the mounting seat 1132 and the frame beam 1131 is achieved.

Therefore, the battery 10 further includes the third sealing member 55, and the third sealing member 55 is abutted between the frame beam 1131 and the mounting seat 1132, so that the sealing connection between the mounting seat 1132 and the frame beam 1131 is realized, and the connection is convenient and quick.

With continued reference to fig. 7, in some embodiments, the battery 10 further includes a second sealing member 54, where the second cover 52 is fastened to the first wall 113, and the second sealing member 54 is disposed around the periphery of the through hole 113a and abuts between the first wall 113 and the second cover 52.

Alternatively, the mounting seat 1132 and the frame beam 1131 may be connected by threaded connection, pin connection, or riveting, etc.

The second seal 54 is disposed around the periphery of the via 113a, and the second seal 54 may be disposed at a distance from the periphery of the via 113 a.

In embodiments where the first wall 113 includes a frame beam 1131 and a mount 1132, the second seal 54 may also be disposed around the perimeter of the mounting hole 1131a to provide a secondary seal to the connection of the frame beam 1131 and the mount 1132.

Therefore, the battery 10 further includes the second sealing member 54, and the second sealing member 54 is disposed to abut between the second cover 52 and the first wall 113, so that the sealing connection between the second cover 52 and the first wall 113 is achieved, and the connection process between the second cover 52 and the first wall 113 is simplified, thereby improving the installation efficiency of the second cover 52 and the first wall 113.

With continued reference to fig. 7, in some embodiments, the second cover 52 has a protrusion 52a protruding toward the first cover 51, and the protrusion 52a abuts against the first cover 51 to limit displacement of the first cover 51 in a direction away from the first wall 113.

Alternatively, the protruding portion 52a may be integrally formed with the second cover 52, or the protruding portion 52a may be formed by welding, screwing, or the like, and then connected to other portions of the second cover 52. Alternatively, the protruding portion 52a may be formed by press molding, and thus, a recessed portion may be formed on the other side of the second cover 52 opposite to the protruding portion 52 a.

Specifically, after the second cover 52 is connected to the first wall 113, the protrusion 52a abuts against the first cover 51 to provide a limiting effect for the first cover 51 along a direction perpendicular to the first wall 113, so as to limit displacement of the first cover 51 along a direction away from the first wall 113, reduce risk of failure of sealing connection between the first cover 51 and the first wall 113 caused by movement of the first cover 51 relative to the first wall 113, and improve reliability of sealing connection between the first cover 51 and the first wall 113.

As shown in fig. 5, 6 and 8, in some embodiments, the battery 10 further includes an adapter 56 and a conductive member 57, wherein the adapter 56 includes a first sub-section and a second sub-section bent with each other, the first sub-section is electrically connected to the fuse 40, the second sub-section is electrically connected to one end of the conductive member 57, and the other end of the conductive member 57 is electrically connected to the battery cell 30.

The conductive member 57 may be a member such as a wire, a cable, or a copper bar, which can electrically connect the battery cell 30 and the fuse 40, and the conductive member 57 can electrically connect the fuse 40 and the battery cell 30 in series, so that when the fuse 40 is fused, a high-voltage circuit of the battery cell 30 is broken. The conductive member 57 is disposed generally horizontally within the receiving chamber 11a.

The included angle between the first sub-segment and the second sub-segment may be specifically set according to the included angle between the connecting terminal of the fuse 40 and the conductive member 57 relative to the horizontal direction, and, for example, the connecting terminal connected to the conductive member 57 on the fuse 40 is vertically arranged, and the first sub-segment and the second sub-segment may be set to be perpendicular to each other.

As shown in fig. 8, the second subsection of the adaptor 56 is connected with the conductive element 57, and the connection part of the second subsection and the conductive element can be fixedly connected with the mounting seat 1132, so as to realize positioning of the conductive element 57 and the adaptor 56.

The end of the fuse 40 connected with the conductive member 57 is not always horizontally arranged, the adaptor 56 is provided with the first subsection and the second subsection which are bent mutually, and under the condition that the connecting terminal of the fuse 40 electrically connected with the conductive member 57 is intersected with the horizontal direction, the connection of the fuse 40 and the conductive member 57 can be realized through the adaptor 56, so that the conductive member 57 does not need to be bent, and the reliability of the electrical connection of the conductive member 57 and the fuse 40 is improved.

As shown in fig. 5 and 6, in some embodiments, the battery 10 further includes a signal terminal 58, the signal terminal 58 electrically connecting the fuse 40 and the battery management system of the battery 10 and for transmitting an electrical signal.

Alternatively, the signal terminal 58 may transmit a control signal from the battery management system to the fuse 40 to trigger the fusing of the fuse 40, etc. Alternatively, the signal terminals 58 may transmit information such as the operating condition of the fuse 40 to the battery management system so that the battery management system can know the operating condition of the fuse 40 in real time.

For example, the battery management system sends a control signal to the fuse 40 after receiving a risk of overcurrent, overvoltage or temperature rise of the battery 10, and the fuse 40 triggers a fusing operation after receiving an instruction sent by the control signal, so as to break a high-voltage circuit inside the battery 10 and reduce the possibility of explosion, fire and other consequences of the battery 10 caused by further development of risks such as high temperature and high voltage inside the battery 10.

Therefore, the battery 10 is further provided with the signal terminal 58, the fuse 40 and the battery management system are electrically connected with the signal terminal 58, potential safety hazards of the battery 10 in the working process can be accurately judged according to the working condition of the battery 10 received by the battery management system, and signals are timely transmitted to the fuse 40 through the signal terminal 58, so that the fuse 40 can be timely fused, the risk of mistaken fusing of the fuse 40 is reduced, and the safety performance of the battery 10 is improved.

The power utilization device provided according to the embodiment of the present application includes the battery 10 provided in any of the above embodiments, where the battery 10 is used for providing electric energy.

The power utilization device provided in the embodiment of the present application has the same technical effects due to the battery 10 provided in any one of the embodiments, and is not described herein again.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A battery, comprising:

the box body is provided with a first wall and a containing cavity, the first wall is provided with a through hole, and the through hole is communicated with the containing cavity and the outside of the box body;

the battery monomer is accommodated in the accommodating cavity;

a fuse connected to the first wall and housed within the housing cavity, the fuse electrically connected to the battery cell, the fuse configured to be accessible to the housing cavity via the via;

the first cover body is connected with the first wall in a sealing way and covers the via hole;

the second cover body is in sealing connection with the first wall, and the second cover body is sleeved on the first cover body.

2. The battery of claim 1, wherein the first wall includes a frame beam having a mounting hole and a mounting seat provided in the mounting hole and sealingly connected to the frame beam; the mounting seat is provided with the through hole, the fuse is connected to the mounting seat, the first cover body is in sealing connection with the mounting seat, and the second cover body is in sealing connection with the frame beam.

3. The battery of claim 2, further comprising a first seal;

one of the mounting seat and the first cover body is provided with an annular clamping groove, the other one of the mounting seat and the first cover body is provided with an annular clamping block, the annular clamping block is clamped in the annular clamping groove, and the first sealing piece is abutted between the annular clamping groove and the annular clamping block.

4. The battery of claim 2, wherein the frame beam includes a beam body and a support member, the support member is connected to at least one side of the beam body in an axial direction perpendicular to the mounting hole, the mounting hole is provided through the support member and the beam body, the mount is connected to the beam body and the support member, and the second cover is connected to the beam body and the support member.

5. The battery of claim 2, further comprising a third seal, the mount being in secure connection with the frame beam, the third seal surrounding a perimeter of the mounting hole and abutting between the frame beam and the mount.

6. The battery of any one of claims 1 to 5, further comprising a second seal, the second cover being in secure connection with the first wall, the second seal abutting between the first wall and the second cover.

7. The battery according to any one of claims 1 to 5, wherein the second cover has a convex portion that is provided to project toward the first cover, the convex portion abutting against the first cover to restrict displacement of the first cover in a direction away from the first wall.

8. The battery of any one of claims 1 to 5, further comprising an adapter and a conductive member, the adapter comprising a first subsection and a second subsection that are bent toward each other, the first subsection being electrically connected to the fuse, the second subsection being electrically connected to one end of the conductive member, and the other end of the conductive member being electrically connected to the battery cell.

9. The battery of any one of claims 1 to 5, further comprising a signal terminal electrically connecting the fuse and a battery management system of the battery and for transmitting an electrical signal.

10. An electrical device comprising a battery as claimed in any one of claims 1 to 9 for providing electrical energy.

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